build(deps): bump docker/setup-qemu-action

Bumps the github-actions-dependencies group with 1 update: [docker/setup-qemu-action](https://github.com/docker/setup-qemu-action). Updates `docker/setup-qemu-action` from 4.2.0 to 4.3.0 - [Release notes](https://github.com/docker/setup-qemu-action/releases) - [Commits](96fe6ef7f3...1f40c72289) --- updated-dependencies: - dependency-name: docker/setup-qemu-action dependency-version: 4.3.0 dependency-type: direct:production update-type: version-update:semver-minor dependency-group: github-actions-dependencies ... Signed-off-by: dependabot[bot] <support@github.com>
Merge pull request #106 from Adityakk9031/fix/issue-82
2026-09-08 07:01:30 +02:00 · 2026-09-07 21:05:08 +00:00 · 2026-08-31 09:20:40 -04:00 · 2026-08-31 09:20:23 -04:00 · 2026-08-31 09:19:48 -04:00 · 2026-08-28 21:03:56 +00:00
14 changed files with 818 additions and 199 deletions
--- a/.github/ISSUE_TEMPLATE/1.bug_report.yml
+++ b/.github/ISSUE_TEMPLATE/1.bug_report.yml
@@ -14,12 +14,13 @@ body:
          label: Environment
          description: Please fill out the relevant details below for your environment.
          value: |
-              - OS Type & Version: (e.g., Ubuntu 22.04)
+              - OS Type & Version:
              - Pangolin Version:
              - Edition (Community or Enterprise):
              - Gerbil Version:
              - Traefik Version:
              - Newt Version:
-              - Olm Version: (if applicable)
+              - Client Version:
      validations:
          required: true
--- a/.github/dependabot.yml
+++ b/.github/dependabot.yml
@@ -1,40 +1,32 @@
 version: 2
 updates:
  - package-ecosystem: "gomod"
    directory: "/"
    schedule:
      interval: "daily"
    open-pull-requests-limit: 1
    groups:
-      dev-patch-updates:
+      go-dependencies:
-        dependency-type: "development"
+        patterns:
-        update-types:
+          - "*"
          - "patch"
      dev-minor-updates:
        dependency-type: "development"
        update-types:
          - "minor"
      prod-patch-updates:
        dependency-type: "production"
        update-types:
          - "patch"
      prod-minor-updates:
        dependency-type: "production"
        update-types:
          - "minor"
  - package-ecosystem: "docker"
    directory: "/"
    schedule:
      interval: "daily"
    open-pull-requests-limit: 1
    groups:
-      patch-updates:
+      docker-dependencies:
-        update-types:
+        patterns:
-          - "patch"
+          - "*"
      minor-updates:
        update-types:
          - "minor"
  - package-ecosystem: "github-actions"
    directory: "/"
    schedule:
      interval: "weekly"
    open-pull-requests-limit: 1
    groups:
      github-actions-dependencies:
        patterns:
          - "*"
--- a/.github/workflows/cicd.yml
+++ b/.github/workflows/cicd.yml
@@ -36,16 +36,16 @@ jobs:
    steps:
      - name: Checkout code
-        uses: actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd # v6.0.2
+        uses: actions/checkout@3d3c42e5aac5ba805825da76410c181273ba90b1 # v7.0.1
      - name: Set up QEMU
-        uses: docker/setup-qemu-action@c7c53464625b32c7a7e944ae62b3e17d2b600130 # v3.7.0
+        uses: docker/setup-qemu-action@1f40c72289eff860ee54a304f1438e3cff362e0a # v4.3.0
      - name: Set up Docker Buildx
-        uses: docker/setup-buildx-action@8d2750c68a42422c14e847fe6c8ac0403b4cbd6f # v3.12.0
+        uses: docker/setup-buildx-action@37fe631027851001ddb9b187196cc803df7f5f0e # v4.3.0
      - name: Log in to Docker Hub
-        uses: docker/login-action@b45d80f862d83dbcd57f89517bcf500b2ab88fb2 # v4.0.0
+        uses: docker/login-action@dbcb813823bdd20940b903addbd779551569679f # v4.6.0
        with:
          registry: docker.io
          username: ${{ secrets.DOCKER_HUB_USERNAME }}
@@ -57,9 +57,9 @@ jobs:
        shell: bash
      - name: Install Go
-        uses: actions/setup-go@4b73464bb391d4059bd26b0524d20df3927bd417 # v6.3.0
+        uses: actions/setup-go@b7ad1dad31e06c5925ef5d2fc7ad053ef454303e # v7.0.0
        with:
-          go-version: 1.25
+          go-version: 1.26
      - name: Update version in main.go
        run: |
@@ -80,7 +80,7 @@ jobs:
        shell: bash
      - name: Login in to GHCR
-        uses: docker/login-action@b45d80f862d83dbcd57f89517bcf500b2ab88fb2 # v4.0.0
+        uses: docker/login-action@dbcb813823bdd20940b903addbd779551569679f # v4.6.0
        with:
          registry: ghcr.io
          username: ${{ github.actor }}
@@ -107,8 +107,9 @@ jobs:
        shell: bash
      - name: Install cosign
-        # cosign is used to sign and verify container images (key and keyless)
+        uses: sigstore/cosign-installer@6f9f17788090df1f26f669e9d70d6ae9567deba6 # v4.1.2
-        uses: sigstore/cosign-installer@ba7bc0a3fef59531c69a25acd34668d6d3fe6f22 # v4.1.0
+        with:
          cosign-release: v3.0.6
      - name: Dual-sign and verify (GHCR & Docker Hub)
        # Sign each image by digest using keyless (OIDC) and key-based signing,
@@ -155,7 +156,7 @@ jobs:
        shell: bash
      - name: Upload artifacts from /bin
-        uses: actions/upload-artifact@bbbca2ddaa5d8feaa63e36b76fdaad77386f024f # v7.0.0
+        uses: actions/upload-artifact@043fb46d1a93c77aae656e7c1c64a875d1fc6a0a # v7.0.1
        with:
          name: binaries
          path: bin/
--- a/.github/workflows/mirror.yaml
+++ b/.github/workflows/mirror.yaml
@@ -23,7 +23,7 @@ jobs:
          skopeo --version
      - name: Install cosign
-        uses: sigstore/cosign-installer@ba7bc0a3fef59531c69a25acd34668d6d3fe6f22 # v4.1.0
+        uses: sigstore/cosign-installer@6f9f17788090df1f26f669e9d70d6ae9567deba6 # v4.1.2
      - name: Input check
        run: |
--- a/.github/workflows/test.yml
+++ b/.github/workflows/test.yml
@@ -14,12 +14,16 @@ jobs:
    runs-on: amd64-runner
    steps:
-      - uses: actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd # v6.0.2
+      - uses: actions/checkout@3d3c42e5aac5ba805825da76410c181273ba90b1 # v7.0.1
      - name: Read go version
        id: goversion
        run: echo "version=$(cat .go-version)" >> $GITHUB_OUTPUT
      - name: Set up Go
-        uses: actions/setup-go@4b73464bb391d4059bd26b0524d20df3927bd417 # v6.3.0
+        uses: actions/setup-go@b7ad1dad31e06c5925ef5d2fc7ad053ef454303e # v7.0.0
        with:
-          go-version: 1.26
+          go-version: ${{ steps.goversion.outputs.version }}
      - name: Build go
        run: go build
--- a/.go-version
+++ b/.go-version
@@ -1 +1 @@
-1.25
+1.26
--- a/5
+++ b/5
@@ -1,4 +1,5 @@
-FROM golang:1.26-alpine AS builder
+ARG GO_VERSION=1.26
 FROM golang:${GO_VERSION}-alpine AS builder
 # Set the working directory inside the container
 WORKDIR /app
@@ -16,7 +17,7 @@ COPY . .
 RUN CGO_ENABLED=0 GOOS=linux go build -o /gerbil
 # Start a new stage from scratch
-FROM alpine:3.23 AS runner
+FROM alpine:3.24 AS runner
 RUN apk add --no-cache iptables iproute2
--- a/6
+++ b/6
@@ -1,4 +1,6 @@
 GO_VERSION := $(shell cat .go-version 2>/dev/null)
 all: build push
 docker-build-release:
@@ -7,10 +9,10 @@ docker-build-release:
 		exit 1; \
 	fi
 	docker buildx build --platform linux/arm64,linux/amd64 -t fosrl/gerbil:latest -f Dockerfile --push .
-	docker buildx build --platform linux/arm64,linux/amd64 -t fosrl/gerbil:$(tag) -f Dockerfile --push .
+	docker buildx build --platform linux/arm64,linux/amd64 -t fosrl/gerbil:$(tag) -f Dockerfile --build-arg GO_VERSION=$(GO_VERSION) --push .
 build:
-	docker build -t fosrl/gerbil:latest .
+	docker build -t fosrl/gerbil:latest --build-arg GO_VERSION=$(GO_VERSION) .
 push:
 	docker push fosrl/gerbil:latest
--- a/go.mod
+++ b/go.mod
@@ -4,16 +4,16 @@ go 1.26.0
 require (
 	github.com/patrickmn/go-cache v2.1.0+incompatible
-	github.com/prometheus/client_golang v1.20.5
+	github.com/prometheus/client_golang v1.24.1
 	github.com/vishvananda/netlink v1.3.1
-	go.opentelemetry.io/otel v1.43.0
+	go.opentelemetry.io/otel v1.46.0
-	go.opentelemetry.io/otel/exporters/otlp/otlpmetric/otlpmetricgrpc v1.43.0
+	go.opentelemetry.io/otel/exporters/otlp/otlpmetric/otlpmetricgrpc v1.46.0
-	go.opentelemetry.io/otel/exporters/otlp/otlpmetric/otlpmetrichttp v1.43.0
+	go.opentelemetry.io/otel/exporters/otlp/otlpmetric/otlpmetrichttp v1.46.0
-	go.opentelemetry.io/otel/metric v1.43.0
+	go.opentelemetry.io/otel/metric v1.46.0
-	go.opentelemetry.io/otel/sdk v1.43.0
+	go.opentelemetry.io/otel/sdk v1.46.0
-	go.opentelemetry.io/otel/sdk/metric v1.43.0
+	go.opentelemetry.io/otel/sdk/metric v1.46.0
-	golang.org/x/crypto v0.49.0
+	golang.org/x/crypto v0.55.0
-	golang.org/x/sync v0.20.0
+	golang.org/x/sync v0.22.0
 	golang.zx2c4.com/wireguard/wgctrl v0.0.0-20230429144221-925a1e7659e6
 )
@@ -21,30 +21,29 @@ require (
 	github.com/beorn7/perks v1.0.1 // indirect
 	github.com/cenkalti/backoff/v5 v5.0.3 // indirect
 	github.com/cespare/xxhash/v2 v2.3.0 // indirect
-	github.com/go-logr/logr v1.4.3 // indirect
+	github.com/go-logr/logr v1.4.4 // indirect
 	github.com/go-logr/stdr v1.2.2 // indirect
 	github.com/google/go-cmp v0.7.0 // indirect
 	github.com/google/uuid v1.6.0 // indirect
-	github.com/grpc-ecosystem/grpc-gateway/v2 v2.28.0 // indirect
+	github.com/grpc-ecosystem/grpc-gateway/v2 v2.30.0 // indirect
 	github.com/josharian/native v1.1.0 // indirect
 	github.com/klauspost/compress v1.17.9 // indirect
 	github.com/mdlayher/genetlink v1.3.2 // indirect
 	github.com/mdlayher/netlink v1.7.2 // indirect
 	github.com/mdlayher/socket v0.4.1 // indirect
 	github.com/munnerz/goautoneg v0.0.0-20191010083416-a7dc8b61c822 // indirect
-	github.com/prometheus/client_model v0.6.1 // indirect
+	github.com/prometheus/client_model v0.6.2 // indirect
-	github.com/prometheus/common v0.61.0 // indirect
+	github.com/prometheus/common v0.70.1 // indirect
-	github.com/prometheus/procfs v0.15.1 // indirect
+	github.com/prometheus/procfs v0.21.1 // indirect
 	github.com/vishvananda/netns v0.0.5 // indirect
 	go.opentelemetry.io/auto/sdk v1.2.1 // indirect
-	go.opentelemetry.io/otel/trace v1.43.0 // indirect
+	go.opentelemetry.io/otel/trace v1.46.0 // indirect
-	go.opentelemetry.io/proto/otlp v1.10.0 // indirect
+	go.opentelemetry.io/proto/otlp v1.11.0 // indirect
-	golang.org/x/net v0.52.0 // indirect
+	golang.org/x/net v0.58.0 // indirect
-	golang.org/x/sys v0.42.0 // indirect
+	golang.org/x/sys v0.47.0 // indirect
-	golang.org/x/text v0.35.0 // indirect
+	golang.org/x/text v0.41.0 // indirect
 	golang.zx2c4.com/wireguard v0.0.0-20230325221338-052af4a8072b // indirect
-	google.golang.org/genproto/googleapis/api v0.0.0-20260401024825-9d38bb4040a9 // indirect
+	google.golang.org/genproto/googleapis/api v0.0.0-20260819154853-08b0e4226688 // indirect
-	google.golang.org/genproto/googleapis/rpc v0.0.0-20260401024825-9d38bb4040a9 // indirect
+	google.golang.org/genproto/googleapis/rpc v0.0.0-20260819154853-08b0e4226688 // indirect
-	google.golang.org/grpc v1.80.0 // indirect
+	google.golang.org/grpc v1.83.1 // indirect
-	google.golang.org/protobuf v1.36.11 // indirect
+	google.golang.org/protobuf v1.36.12 // indirect
 )
--- a/go.sum
+++ b/go.sum
@@ -4,11 +4,9 @@ github.com/cenkalti/backoff/v5 v5.0.3 h1:ZN+IMa753KfX5hd8vVaMixjnqRZ3y8CuJKRKj1x
 github.com/cenkalti/backoff/v5 v5.0.3/go.mod h1:rkhZdG3JZukswDf7f0cwqPNk4K0sa+F97BxZthm/crw=
 github.com/cespare/xxhash/v2 v2.3.0 h1:UL815xU9SqsFlibzuggzjXhog7bL6oX9BbNZnL2UFvs=
 github.com/cespare/xxhash/v2 v2.3.0/go.mod h1:VGX0DQ3Q6kWi7AoAeZDth3/j3BFtOZR5XLFGgcrjCOs=
 github.com/davecgh/go-spew v1.1.1 h1:vj9j/u1bqnvCEfJOwUhtlOARqs3+rkHYY13jYWTU97c=
 github.com/davecgh/go-spew v1.1.1/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=
 github.com/go-logr/logr v1.2.2/go.mod h1:jdQByPbusPIv2/zmleS9BjJVeZ6kBagPoEUsqbVz/1A=
-github.com/go-logr/logr v1.4.3 h1:CjnDlHq8ikf6E492q6eKboGOC0T8CDaOvkHCIg8idEI=
+github.com/go-logr/logr v1.4.4 h1:tG4xh9yMsRCAiodLVTxyrkzSZ9+o0L1Kg/+cPVcbP/8=
-github.com/go-logr/logr v1.4.3/go.mod h1:9T104GzyrTigFIr8wt5mBrctHMim0Nb2HLGrmQ40KvY=
+github.com/go-logr/logr v1.4.4/go.mod h1:9T104GzyrTigFIr8wt5mBrctHMim0Nb2HLGrmQ40KvY=
 github.com/go-logr/stdr v1.2.2 h1:hSWxHoqTgW2S2qGc0LTAI563KZ5YKYRhT3MFKZMbjag=
 github.com/go-logr/stdr v1.2.2/go.mod h1:mMo/vtBO5dYbehREoey6XUKy/eSumjCCveDpRre4VKE=
 github.com/golang/protobuf v1.5.4 h1:i7eJL8qZTpSEXOPTxNKhASYpMn+8e5Q6AdndVa1dWek=
@@ -17,12 +15,12 @@ github.com/google/go-cmp v0.7.0 h1:wk8382ETsv4JYUZwIsn6YpYiWiBsYLSJiTsyBybVuN8=
 github.com/google/go-cmp v0.7.0/go.mod h1:pXiqmnSA92OHEEa9HXL2W4E7lf9JzCmGVUdgjX3N/iU=
 github.com/google/uuid v1.6.0 h1:NIvaJDMOsjHA8n1jAhLSgzrAzy1Hgr+hNrb57e+94F0=
 github.com/google/uuid v1.6.0/go.mod h1:TIyPZe4MgqvfeYDBFedMoGGpEw/LqOeaOT+nhxU+yHo=
-github.com/grpc-ecosystem/grpc-gateway/v2 v2.28.0 h1:HWRh5R2+9EifMyIHV7ZV+MIZqgz+PMpZ14Jynv3O2Zs=
+github.com/grpc-ecosystem/grpc-gateway/v2 v2.30.0 h1:/Tnpcb2E0Pz/tN9s3bfEY2Q8ePCEX9iuS+cneUwncnw=
-github.com/grpc-ecosystem/grpc-gateway/v2 v2.28.0/go.mod h1:JfhWUomR1baixubs02l85lZYYOm7LV6om4ceouMv45c=
+github.com/grpc-ecosystem/grpc-gateway/v2 v2.30.0/go.mod h1:zOBXOsUaBSjKgmH4OGzV1esUpR3oUSCPYVd2cUBjKYY=
 github.com/josharian/native v1.1.0 h1:uuaP0hAbW7Y4l0ZRQ6C9zfb7Mg1mbFKry/xzDAfmtLA=
 github.com/josharian/native v1.1.0/go.mod h1:7X/raswPFr05uY3HiLlYeyQntB6OO7E/d2Cu7qoaN2w=
-github.com/klauspost/compress v1.17.9 h1:6KIumPrER1LHsvBVuDa0r5xaG0Es51mhhB9BQB2qeMA=
+github.com/klauspost/compress v1.19.1 h1:VsB4HPswih7mmZ8WleSFQ75c/Ui1M4trX5oAsJnhSlk=
-github.com/klauspost/compress v1.17.9/go.mod h1:Di0epgTjJY877eYKx5yC51cX2A2Vl2ibi7bDH9ttBbw=
+github.com/klauspost/compress v1.19.1/go.mod h1:cwPg85FWrGar70rWktvGQj8/hthj3wpl0PGDogxkrSQ=
 github.com/kylelemons/godebug v1.1.0 h1:RPNrshWIDI6G2gRW9EHilWtl7Z6Sb1BR0xunSBf0SNc=
 github.com/kylelemons/godebug v1.1.0/go.mod h1:9/0rRGxNHcop5bhtWyNeEfOS8JIWk580+fNqagV/RAw=
 github.com/mdlayher/genetlink v1.3.2 h1:KdrNKe+CTu+IbZnm/GVUMXSqBBLqcGpRDa0xkQy56gw=
@@ -37,65 +35,69 @@ github.com/munnerz/goautoneg v0.0.0-20191010083416-a7dc8b61c822 h1:C3w9PqII01/Oq
 github.com/munnerz/goautoneg v0.0.0-20191010083416-a7dc8b61c822/go.mod h1:+n7T8mK8HuQTcFwEeznm/DIxMOiR9yIdICNftLE1DvQ=
 github.com/patrickmn/go-cache v2.1.0+incompatible h1:HRMgzkcYKYpi3C8ajMPV8OFXaaRUnok+kx1WdO15EQc=
 github.com/patrickmn/go-cache v2.1.0+incompatible/go.mod h1:3Qf8kWWT7OJRJbdiICTKqZju1ZixQ/KpMGzzAfe6+WQ=
-github.com/pmezard/go-difflib v1.0.0 h1:4DBwDE0NGyQoBHbLQYPwSUPoCMWR5BEzIk/f1lZbAQM=
+github.com/prometheus/client_golang v1.24.1 h1:JnJkREXzWxUdCuPFpIWZiPispT9xVV59uiuyR2bPlnU=
-github.com/pmezard/go-difflib v1.0.0/go.mod h1:iKH77koFhYxTK1pcRnkKkqfTogsbg7gZNVY4sRDYZ/4=
+github.com/prometheus/client_golang v1.24.1/go.mod h1:F+oSRECHg4sse5ucfYpYDeIv/hu68Zo0uoHKetWnzcE=
-github.com/prometheus/client_golang v1.20.5 h1:cxppBPuYhUnsO6yo/aoRol4L7q7UFfdm+bR9r+8l63Y=
+github.com/prometheus/client_model v0.6.2 h1:oBsgwpGs7iVziMvrGhE53c/GrLUsZdHnqNwqPLxwZyk=
-github.com/prometheus/client_golang v1.20.5/go.mod h1:PIEt8X02hGcP8JWbeHyeZ53Y/jReSnHgO035n//V5WE=
+github.com/prometheus/client_model v0.6.2/go.mod h1:y3m2F6Gdpfy6Ut/GBsUqTWZqCUvMVzSfMLjcu6wAwpE=
-github.com/prometheus/client_model v0.6.1 h1:ZKSh/rekM+n3CeS952MLRAdFwIKqeY8b62p8ais2e9E=
+github.com/prometheus/common v0.70.1 h1:1HvjP4D5oL3t8RsPlwxA9onvvStjtIHYE5XuuwOi/PY=
-github.com/prometheus/client_model v0.6.1/go.mod h1:OrxVMOVHjw3lKMa8+x6HeMGkHMQyHDk9E3jmP2AmGiY=
+github.com/prometheus/common v0.70.1/go.mod h1:VdFUQDMZK3VLkurFUVhia6uys/0suUp86TJz5qbJRhc=
-github.com/prometheus/common v0.61.0 h1:3gv/GThfX0cV2lpO7gkTUwZru38mxevy90Bj8YFSRQQ=
+github.com/prometheus/procfs v0.21.1 h1:GljZCt+zSTS+NZq88cyQ1LjZ+RCHp3uVuabBWA5+OJI=
-github.com/prometheus/common v0.61.0/go.mod h1:zr29OCN/2BsJRaFwG8QOBr41D6kkchKbpeNH7pAjb/s=
+github.com/prometheus/procfs v0.21.1/go.mod h1:aB55Cww9pdSJVHk0hUf0inxWyyjPogFIjmHKYgMKmtY=
-github.com/prometheus/procfs v0.15.1 h1:YagwOFzUgYfKKHX6Dr+sHT7km/hxC76UB0learggepc=
+github.com/stretchr/testify v1.12.1 h1:EuwCh5fleGS7H32xRwO3wRGT7DxrDhLAT6FF8MpWDWE=
-github.com/prometheus/procfs v0.15.1/go.mod h1:fB45yRUv8NstnjriLhBQLuOUt+WW4BsoGhij/e3PBqk=
+github.com/stretchr/testify v1.12.1/go.mod h1:MDEgiDPPsNp5cuIrHPPCyornHKgEVbtFUmoNlxoYthg=
 github.com/stretchr/testify v1.11.1 h1:7s2iGBzp5EwR7/aIZr8ao5+dra3wiQyKjjFuvgVKu7U=
 github.com/stretchr/testify v1.11.1/go.mod h1:wZwfW3scLgRK+23gO65QZefKpKQRnfz6sD981Nm4B6U=
 github.com/vishvananda/netlink v1.3.1 h1:3AEMt62VKqz90r0tmNhog0r/PpWKmrEShJU0wJW6bV0=
 github.com/vishvananda/netlink v1.3.1/go.mod h1:ARtKouGSTGchR8aMwmkzC0qiNPrrWO5JS/XMVl45+b4=
 github.com/vishvananda/netns v0.0.5 h1:DfiHV+j8bA32MFM7bfEunvT8IAqQ/NzSJHtcmW5zdEY=
 github.com/vishvananda/netns v0.0.5/go.mod h1:SpkAiCQRtJ6TvvxPnOSyH3BMl6unz3xZlaprSwhNNJM=
 go.opentelemetry.io/auto/sdk v1.2.1 h1:jXsnJ4Lmnqd11kwkBV2LgLoFMZKizbCi5fNZ/ipaZ64=
 go.opentelemetry.io/auto/sdk v1.2.1/go.mod h1:KRTj+aOaElaLi+wW1kO/DZRXwkF4C5xPbEe3ZiIhN7Y=
-go.opentelemetry.io/otel v1.43.0 h1:mYIM03dnh5zfN7HautFE4ieIig9amkNANT+xcVxAj9I=
+go.opentelemetry.io/otel v1.46.0 h1:FHt5/CDyVxi/8IM1CH7VE/rRgq3kLHa2mSTVMO8AWyc=
-go.opentelemetry.io/otel v1.43.0/go.mod h1:JuG+u74mvjvcm8vj8pI5XiHy1zDeoCS2LB1spIq7Ay0=
+go.opentelemetry.io/otel v1.46.0/go.mod h1:Gj3SEScelsNC45tp4nSxRYlS+f5iez7W8XPMCt905kE=
-go.opentelemetry.io/otel/exporters/otlp/otlpmetric/otlpmetricgrpc v1.43.0 h1:8UQVDcZxOJLtX6gxtDt3vY2WTgvZqMQRzjsqiIHQdkc=
+go.opentelemetry.io/otel/exporters/otlp/otlpmetric/otlpmetricgrpc v1.46.0 h1:qkDYCAFiZXLcs1L4aY+tP2wguQ4kURANqHOQMA2et2s=
-go.opentelemetry.io/otel/exporters/otlp/otlpmetric/otlpmetricgrpc v1.43.0/go.mod h1:2lmweYCiHYpEjQ/lSJBYhj9jP1zvCvQW4BqL9dnT7FQ=
+go.opentelemetry.io/otel/exporters/otlp/otlpmetric/otlpmetricgrpc v1.46.0/go.mod h1:tkipS4DRzmpAmvg+Gw4++O1IdDq6TVDnvnYU6cmbQVs=
-go.opentelemetry.io/otel/exporters/otlp/otlpmetric/otlpmetrichttp v1.43.0 h1:w1K+pCJoPpQifuVpsKamUdn9U0zM3xUziVOqsGksUrY=
+go.opentelemetry.io/otel/exporters/otlp/otlpmetric/otlpmetrichttp v1.46.0 h1:AP23h/mFgb/lc7tdck1Kfn9qxsM8TAeNPCU5C3pzaps=
-go.opentelemetry.io/otel/exporters/otlp/otlpmetric/otlpmetrichttp v1.43.0/go.mod h1:HBy4BjzgVE8139ieRI75oXm3EcDN+6GhD88JT1Kjvxg=
+go.opentelemetry.io/otel/exporters/otlp/otlpmetric/otlpmetrichttp v1.46.0/go.mod h1:K4EqCe1b4kGk5WR690ntg9LaBfsPoV32FwthbyoptuA=
-go.opentelemetry.io/otel/metric v1.43.0 h1:d7638QeInOnuwOONPp4JAOGfbCEpYb+K6DVWvdxGzgM=
+go.opentelemetry.io/otel/metric v1.46.0 h1:yBnkXvgV7AXFILZc5K6IZe/CBFF3OS7BJ8ov6/lj0K8=
-go.opentelemetry.io/otel/metric v1.43.0/go.mod h1:RDnPtIxvqlgO8GRW18W6Z/4P462ldprJtfxHxyKd2PY=
+go.opentelemetry.io/otel/metric v1.46.0/go.mod h1:iPmdWqifKUdzziPkvvzIJXITl56fQx2mGM/DHLB3/2o=
-go.opentelemetry.io/otel/sdk v1.43.0 h1:pi5mE86i5rTeLXqoF/hhiBtUNcrAGHLKQdhg4h4V9Dg=
+go.opentelemetry.io/otel/metric/x v0.68.0 h1:TA/cBT23D3MnxYPwHL7YFOdYGdx0A0v+s7Mzotpd1dU=
-go.opentelemetry.io/otel/sdk v1.43.0/go.mod h1:P+IkVU3iWukmiit/Yf9AWvpyRDlUeBaRg6Y+C58QHzg=
+go.opentelemetry.io/otel/metric/x v0.68.0/go.mod h1:agudOmvWhwUTjgibWDzxD2PoWYnpw5Ht5jISYOD2Hd4=
-go.opentelemetry.io/otel/sdk/metric v1.43.0 h1:S88dyqXjJkuBNLeMcVPRFXpRw2fuwdvfCGLEo89fDkw=
+go.opentelemetry.io/otel/sdk v1.46.0 h1:h5CNQQjEbuQXY/JfZtgt3i7HVFV3aHPO2OAwO2eTYPI=
-go.opentelemetry.io/otel/sdk/metric v1.43.0/go.mod h1:C/RJtwSEJ5hzTiUz5pXF1kILHStzb9zFlIEe85bhj6A=
+go.opentelemetry.io/otel/sdk v1.46.0/go.mod h1:GAERFXFt5SYCEB+YiKUbMBeza6UaDH7GmGOZEfh2gSM=
-go.opentelemetry.io/otel/trace v1.43.0 h1:BkNrHpup+4k4w+ZZ86CZoHHEkohws8AY+WTX09nk+3A=
+go.opentelemetry.io/otel/sdk/metric v1.46.0 h1:0piZ26EG4RBfebb2jhDH6ERCYHoVWduc3kLgPCwSnSE=
-go.opentelemetry.io/otel/trace v1.43.0/go.mod h1:/QJhyVBUUswCphDVxq+8mld+AvhXZLhe+8WVFxiFff0=
+go.opentelemetry.io/otel/sdk/metric v1.46.0/go.mod h1:I1PbKrdVc8Qu8HYVDNtqVIwLwjNrhsV/uFuxfwg8mO4=
-go.opentelemetry.io/proto/otlp v1.10.0 h1:IQRWgT5srOCYfiWnpqUYz9CVmbO8bFmKcwYxpuCSL2g=
+go.opentelemetry.io/otel/trace v1.46.0 h1:OULy7ccdJnZtJ0UDYFOIGaCmiWzJ8Vi2G/Rsu60qs1c=
-go.opentelemetry.io/proto/otlp v1.10.0/go.mod h1:/CV4QoCR/S9yaPj8utp3lvQPoqMtxXdzn7ozvvozVqk=
+go.opentelemetry.io/otel/trace v1.46.0/go.mod h1:J7GAXweO77XSFkB/rmAqk9D6ihszhFjLU+d9WuUxDLI=
-golang.org/x/crypto v0.49.0 h1:+Ng2ULVvLHnJ/ZFEq4KdcDd/cfjrrjjNSXNzxg0Y4U4=
+go.opentelemetry.io/proto/otlp v1.11.0 h1:5rrYs0Ykyj50sdU/JU0x8etU+LubXWb+gED6TbEdMIk=
-golang.org/x/crypto v0.49.0/go.mod h1:ErX4dUh2UM+CFYiXZRTcMpEcN8b/1gxEuv3nODoYtCA=
+go.opentelemetry.io/proto/otlp v1.11.0/go.mod h1:SmVizdCOAm3XBtG1g1NnOdhW6jtddT72hLMhv8VwA8E=
-golang.org/x/net v0.52.0 h1:He/TN1l0e4mmR3QqHMT2Xab3Aj3L9qjbhRm78/6jrW0=
+go.uber.org/goleak v1.3.0 h1:2K3zAYmnTNqV73imy9J1T3WC+gmCePx2hEGkimedGto=
-golang.org/x/net v0.52.0/go.mod h1:R1MAz7uMZxVMualyPXb+VaqGSa3LIaUqk0eEt3w36Sw=
+go.uber.org/goleak v1.3.0/go.mod h1:CoHD4mav9JJNrW/WLlf7HGZPjdw8EucARQHekz1X6bE=
-golang.org/x/sync v0.20.0 h1:e0PTpb7pjO8GAtTs2dQ6jYa5BWYlMuX047Dco/pItO4=
+go.yaml.in/yaml/v2 v2.4.4 h1:tuyd0P+2Ont/d6e2rl3be67goVK4R6deVxCUX5vyPaQ=
-golang.org/x/sync v0.20.0/go.mod h1:9xrNwdLfx4jkKbNva9FpL6vEN7evnE43NNNJQ2LF3+0=
+go.yaml.in/yaml/v2 v2.4.4/go.mod h1:gMZqIpDtDqOfM0uNfy0SkpRhvUryYH0Z6wdMYcacYXQ=
 go.yaml.in/yaml/v3 v3.0.5 h1:N6y/pJk8buWs9NY5ERU2HSMfm+IuD/OtfdAnq6kESPw=
 go.yaml.in/yaml/v3 v3.0.5/go.mod h1:HVTZu1O7/Vkt2N+BFy8Zza+lnLsABggaTM2ZpNIGuKg=
 golang.org/x/crypto v0.55.0 h1:+KWHjbgOaAQ66dh/YlkZKHlz9ZUlq61AFirAR9ntP8M=
 golang.org/x/crypto v0.55.0/go.mod h1:uq0V9dE/fzQuJtbnL+2EhWOE63vo164FY8xqEnV9xis=
 golang.org/x/net v0.58.0 h1:ynWG7rqYi4ccpTEuPZ2QGWHktVEM9DMCj9yzDE0Q7To=
 golang.org/x/net v0.58.0/go.mod h1:YwCddHnFlT7eLQqVprV19OnhLGtc5xOKgE0RyqgfWAU=
 golang.org/x/sync v0.22.0 h1:SZjpbeLmrCk4xhRSZFNZW5gFUeCeFgjekvI/+gfScek=
 golang.org/x/sync v0.22.0/go.mod h1:9xrNwdLfx4jkKbNva9FpL6vEN7evnE43NNNJQ2LF3+0=
 golang.org/x/sys v0.2.0/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
 golang.org/x/sys v0.10.0/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
-golang.org/x/sys v0.42.0 h1:omrd2nAlyT5ESRdCLYdm3+fMfNFE/+Rf4bDIQImRJeo=
+golang.org/x/sys v0.47.0 h1:o7XGOvZQCADBQQ4Y7VNq2dRWQR7JmOUW8Kxx4ZsNgWs=
-golang.org/x/sys v0.42.0/go.mod h1:4GL1E5IUh+htKOUEOaiffhrAeqysfVGipDYzABqnCmw=
+golang.org/x/sys v0.47.0/go.mod h1:4GL1E5IUh+htKOUEOaiffhrAeqysfVGipDYzABqnCmw=
-golang.org/x/text v0.35.0 h1:JOVx6vVDFokkpaq1AEptVzLTpDe9KGpj5tR4/X+ybL8=
+golang.org/x/text v0.41.0 h1:vz/seA0lnX87Othu2f/0L24RcgrXD9/YFTSuGjj3rH8=
-golang.org/x/text v0.35.0/go.mod h1:khi/HExzZJ2pGnjenulevKNX1W67CUy0AsXcNubPGCA=
+golang.org/x/text v0.41.0/go.mod h1:jvf1O8ajNzZqhSrQBPbutR/EB83Cc0CFrezNQIwbb5M=
 golang.zx2c4.com/wireguard v0.0.0-20230325221338-052af4a8072b h1:J1CaxgLerRR5lgx3wnr6L04cJFbWoceSK9JWBdglINo=
 golang.zx2c4.com/wireguard v0.0.0-20230325221338-052af4a8072b/go.mod h1:tqur9LnfstdR9ep2LaJT4lFUl0EjlHtge+gAjmsHUG4=
 golang.zx2c4.com/wireguard/wgctrl v0.0.0-20230429144221-925a1e7659e6 h1:CawjfCvYQH2OU3/TnxLx97WDSUDRABfT18pCOYwc2GE=
 golang.zx2c4.com/wireguard/wgctrl v0.0.0-20230429144221-925a1e7659e6/go.mod h1:3rxYc4HtVcSG9gVaTs2GEBdehh+sYPOwKtyUWEOTb80=
 gonum.org/v1/gonum v0.17.0 h1:VbpOemQlsSMrYmn7T2OUvQ4dqxQXU+ouZFQsZOx50z4=
 gonum.org/v1/gonum v0.17.0/go.mod h1:El3tOrEuMpv2UdMrbNlKEh9vd86bmQ6vqIcDwxEOc1E=
-google.golang.org/genproto/googleapis/api v0.0.0-20260401024825-9d38bb4040a9 h1:VPWxll4HlMw1Vs/qXtN7BvhZqsS9cdAittCNvVENElA=
+google.golang.org/genproto/googleapis/api v0.0.0-20260819154853-08b0e4226688 h1:ax2KzoSRIZU/M0cIxri3pKxy99vniH1PVxWC6si/eZI=
-google.golang.org/genproto/googleapis/api v0.0.0-20260401024825-9d38bb4040a9/go.mod h1:7QBABkRtR8z+TEnmXTqIqwJLlzrZKVfAUm7tY3yGv0M=
+google.golang.org/genproto/googleapis/api v0.0.0-20260819154853-08b0e4226688/go.mod h1:1RJ9BQGyNdZwkGc1eTqkErfRZ6RJyYPHZo73BZ1vQqI=
-google.golang.org/genproto/googleapis/rpc v0.0.0-20260401024825-9d38bb4040a9 h1:m8qni9SQFH0tJc1X0vmnpw/0t+AImlSvp30sEupozUg=
+google.golang.org/genproto/googleapis/rpc v0.0.0-20260819154853-08b0e4226688 h1:cYNAzI2sUwhmCcoj9TxvihSrqsxt6uIkj3rDRhSDmW4=
-google.golang.org/genproto/googleapis/rpc v0.0.0-20260401024825-9d38bb4040a9/go.mod h1:4Hqkh8ycfw05ld/3BWL7rJOSfebL2Q+DVDeRgYgxUU8=
+google.golang.org/genproto/googleapis/rpc v0.0.0-20260819154853-08b0e4226688/go.mod h1:DjtHYE8FKJLivXcBEjGwndXfIC23G0VpXiXKqG179uA=
-google.golang.org/grpc v1.80.0 h1:Xr6m2WmWZLETvUNvIUmeD5OAagMw3FiKmMlTdViWsHM=
+google.golang.org/grpc v1.83.1 h1:HIO0+BEtBP6soyqvqC8sNUjZ7bTs+0hFQuFF+RAy++Y=
-google.golang.org/grpc v1.80.0/go.mod h1:ho/dLnxwi3EDJA4Zghp7k2Ec1+c2jqup0bFkw07bwF4=
+google.golang.org/grpc v1.83.1/go.mod h1:kDyl6SKsiHKt0uylY5gtn5cEjkrIOhQOGDgIc4JGwzQ=
-google.golang.org/protobuf v1.36.11 h1:fV6ZwhNocDyBLK0dj+fg8ektcVegBBuEolpbTQyBNVE=
+google.golang.org/protobuf v1.36.12 h1:pJOKDDOyeXErUroCihFAd5LQuwXBSpVnKGrj5o/fwxc=
-google.golang.org/protobuf v1.36.11/go.mod h1:HTf+CrKn2C3g5S8VImy6tdcUvCska2kB7j23XfzDpco=
+google.golang.org/protobuf v1.36.12/go.mod h1:HTf+CrKn2C3g5S8VImy6tdcUvCska2kB7j23XfzDpco=
 gopkg.in/yaml.v3 v3.0.1 h1:fxVm/GzAzEWqLHuvctI91KS9hhNmmWOoWu0XTYJS7CA=
 gopkg.in/yaml.v3 v3.0.1/go.mod h1:K4uyk7z7BCEPqu6E+C64Yfv1cQ7kz7rIZviUmN+EgEM=
--- a/internal/metrics/metrics.go
+++ b/internal/metrics/metrics.go
@@ -58,6 +58,7 @@ var (
 	udpPacketSizeBytes         observability.Histogram
 	holePunchEventsTotal       observability.Counter
 	proxyMappingActive         observability.UpDownCounter
 	relayUDPConnectionsActive  observability.UpDownCounter
 	sessionRebuiltTotal        observability.Counter
 	commPatternActive          observability.UpDownCounter
 	proxyCleanupRemovedTotal   observability.Counter
@@ -342,6 +343,11 @@ func createInstruments() error {
 	if err != nil {
 		return err
 	}
 	relayUDPConnectionsActive, err = newUpDownCounter("gerbil_relay_udp_connections_active",
 		"Number of open per-peer outbound UDP sockets held by the relay connection pool", "ifname")
 	if err != nil {
 		return err
 	}
 	sessionRebuiltTotal, err = newCounter("gerbil_session_rebuilt_total",
 		"Count of sessions rebuilt from communication patterns", "ifname")
 	if err != nil {
@@ -711,6 +717,13 @@ func RecordSession(ifname string, delta int64) {
 	activeSessions.Add(context.Background(), delta, observability.Labels{"ifname": ifname})
 }
 func RecordUDPConnection(ifname string, delta int64) {
 	if relayUDPConnectionsActive == nil {
 		return
 	}
 	relayUDPConnectionsActive.Add(context.Background(), delta, observability.Labels{"ifname": ifname})
 }
 func RecordSessionRebuilt(ifname string) {
 	if sessionRebuiltTotal == nil {
 		return
--- a/main.go
+++ b/main.go
@@ -3,6 +3,7 @@ package main
 import (
 	"bytes"
 	"context"
 	"crypto/tls"
 	"encoding/json"
 	"errors"
 	"flag"
@@ -11,10 +12,12 @@ import (
 	"log"
 	"net"
 	"net/http"
 	"net/http/httputil"
 	_ "net/http/pprof"
 	"os"
 	"os/exec"
 	"os/signal"
 	"path/filepath"
 	"runtime"
 	"runtime/pprof"
 	"strconv"
@@ -46,6 +49,7 @@ var (
 	doTrafficShaping bool
 	bandwidthLimit   string
 	ifbName          string // IFB device name for ingress traffic shaping
 	disableFirewall  bool
 )
 type WgConfig struct {
@@ -102,6 +106,144 @@ type UpdateDestinationsRequest struct {
 	Destinations []relay.PeerDestination `json:"destinations"`
 }
 // pangolinDestHeader carries the downstream host:port (reachable over the
 // WireGuard interface) that a /router request should be rewritten to,
 // optionally prefixed with a scheme (e.g. "https://100.96.128.1:443"). It is
 // stripped before the request is forwarded.
 const pangolinDestHeader = "p-dest-header"
 // pangolinHostHeader optionally carries the Host header value that should be
 // sent to the destination, when it differs from pangolinDestHeader (e.g. the
 // target's configured IP/hostname rather than the WireGuard routing
 // address). It is stripped before the request is forwarded. When absent,
 // the destination from pangolinDestHeader is used as the Host header, same
 // as before.
 const pangolinHostHeader = "p-dest-host-header"
 // splitDestHeader separates an optional "scheme://" prefix from a
 // pangolinDestHeader value, defaulting to "http" when none is present.
 func splitDestHeader(dest string) (scheme, host string) {
 	if s, rest, ok := strings.Cut(dest, "://"); ok {
 		return s, rest
 	}
 	return "http", dest
 }
 // hostname strips an optional ":port" suffix from a host header value.
 func hostname(hostport string) string {
 	if h, _, err := net.SplitHostPort(hostport); err == nil {
 		return h
 	}
 	return hostport
 }
 // routerSNIContextKey carries the TLS ServerName (SNI) that
 // routerTransport's DialTLSContext should present, since we dial the
 // WireGuard destination IP but the remote end typically terminates TLS
 // based on the original hostname (pangolinHostHeader), not that IP.
 type routerSNIContextKey struct{}
 // routerTransport is routerProxy's RoundTripper. It mirrors
 // http.DefaultTransport except for TLS dials, where it sets the SNI from
 // routerSNIContextKey instead of letting it default to the dial address
 // (the WireGuard IP), which the destination's TLS termination won't have a
 // matching certificate/route for.
 var routerTransport = &http.Transport{
 	Proxy: http.ProxyFromEnvironment,
 	DialTLSContext: func(ctx context.Context, network, addr string) (net.Conn, error) {
 		serverName := hostname(addr)
 		if sni, ok := ctx.Value(routerSNIContextKey{}).(string); ok && sni != "" {
 			serverName = sni
 		}
 		dialer := &tls.Dialer{Config: &tls.Config{ServerName: serverName}}
 		return dialer.DialContext(ctx, network, addr)
 	},
 }
 // logDebugRequest dumps a request's destination, headers, and body at debug
 // level for troubleshooting (e.g. verifying an auth header made it through
 // the proxy chain intact). It reads and restores req.Body so the request can
 // still be sent afterward. Header values (including secrets like API keys)
 // are logged as-is - only intended to be enabled for local troubleshooting.
 func logDebugRequest(label string, req *http.Request) {
 	var headerLines strings.Builder
 	for name, values := range req.Header {
 		for _, v := range values {
 			fmt.Fprintf(&headerLines, "\n  %s: %s", name, v)
 		}
 	}
 	body := []byte("<empty>")
 	if req.Body != nil {
 		data, err := io.ReadAll(req.Body)
 		req.Body.Close()
 		if err != nil {
 			logger.Error("%s: failed to read body for logging: %v", label, err)
 		} else {
 			body = data
 		}
 		req.Body = io.NopCloser(bytes.NewReader(data))
 	}
 	logger.Debug("%s: %s %s://%s%s headers:%s\nbody: %s", label, req.Method, req.URL.Scheme, req.Host, req.URL.RequestURI(), headerLines.String(), body)
 }
 // routerProxy forwards /router/* requests from the Pangolin AI gateway to a
 // destination on the WireGuard network, as named by pangolinDestHeader.
 // Used for proxying AI chat completion requests (incl. streaming) to
 // providers reachable only from a site.
 var routerProxy = &httputil.ReverseProxy{
 	Rewrite: func(pr *httputil.ProxyRequest) {
 		scheme, dest := splitDestHeader(pr.In.Header.Get(pangolinDestHeader))
 		pr.Out.URL.Scheme = scheme
 		pr.Out.URL.Host = dest
 		pr.Out.URL.Path = strings.TrimPrefix(pr.In.URL.Path, "/router")
 		if !strings.HasPrefix(pr.Out.URL.Path, "/") {
 			pr.Out.URL.Path = "/" + pr.Out.URL.Path
 		}
 		pr.Out.URL.RawPath = ""
 		pr.Out.Host = dest
 		if hostOverride := pr.In.Header.Get(pangolinHostHeader); hostOverride != "" {
 			pr.Out.Host = hostOverride
 			ctx := context.WithValue(pr.Out.Context(), routerSNIContextKey{}, hostname(hostOverride))
 			pr.Out = pr.Out.WithContext(ctx)
 		}
 		pr.Out.Header.Del(pangolinDestHeader)
 		pr.Out.Header.Del(pangolinHostHeader)
 		logger.Debug("Router proxy: %s %s -> %s (Host: %s)", pr.In.Method, pr.In.URL.Path, pr.Out.URL.String(), pr.Out.Host)
 		logDebugRequest("Router outbound request", pr.Out)
 	},
 	Transport: routerTransport,
 	// Flush written bytes to the client immediately rather than buffering,
 	// which is required for SSE-based streaming chat completions.
 	FlushInterval: -1,
 	ErrorHandler: func(w http.ResponseWriter, r *http.Request, err error) {
 		logger.Error("Router proxy error for %s: %v", r.URL.Path, err)
 		http.Error(w, "Bad gateway", http.StatusBadGateway)
 	},
 }
 func handleRouter(w http.ResponseWriter, r *http.Request) {
 	dest := r.Header.Get(pangolinDestHeader)
 	hostOverride := r.Header.Get(pangolinHostHeader)
 	logger.Debug("Router request received: %s %s dest=%s host=%s remote=%s", r.Method, r.URL.Path, dest, hostOverride, r.RemoteAddr)
 	if dest == "" {
 		http.Error(w, fmt.Sprintf("Missing %s header", pangolinDestHeader), http.StatusBadRequest)
 		return
 	}
 	_, host := splitDestHeader(dest)
 	if _, _, err := net.SplitHostPort(host); err != nil {
 		http.Error(w, "Invalid destination", http.StatusBadRequest)
 		return
 	}
 	routerProxy.ServeHTTP(w, r)
 }
 // httpMetricsMiddleware wraps HTTP handlers with metrics tracking
 func httpMetricsMiddleware(endpoint string, handler http.HandlerFunc) http.HandlerFunc {
 	return func(w http.ResponseWriter, r *http.Request) {
@@ -131,6 +273,16 @@ func (w *responseWriterWrapper) WriteHeader(statusCode int) {
 	w.ResponseWriter.WriteHeader(statusCode)
 }
 // Unwrap exposes the underlying ResponseWriter so http.ResponseController
 // (used by httputil.ReverseProxy's streaming Flush, and by Hijack/Push
 // callers) can see through this wrapper to the real http.Flusher etc.
 // Without this, ReverseProxy's flushes on /router/* silently no-op and
 // streamed responses (e.g. SSE) get buffered until the response completes
 // instead of being forwarded incrementally.
 func (w *responseWriterWrapper) Unwrap() http.ResponseWriter {
 	return w.ResponseWriter
 }
 func parseLogLevel(level string) logger.LogLevel {
 	switch strings.ToUpper(level) {
 	case "DEBUG":
@@ -149,8 +301,6 @@ func parseLogLevel(level string) logger.LogLevel {
 }
 func main() {
 	go monitorMemory(1024 * 1024 * 512) // trigger if memory usage exceeds 512MB
 	var (
 		err                  error
 		wgconfig             WgConfig
@@ -196,6 +346,7 @@ func main() {
 	proxyProtocolStr := os.Getenv("PROXY_PROTOCOL")
 	doTrafficShapingStr := os.Getenv("DO_TRAFFIC_SHAPING")
 	bandwidthLimitStr := os.Getenv("BANDWIDTH_LIMIT")
 	disableFirewallStr := os.Getenv("DISABLE_FIREWALL")
 	// Read metrics env vars (defaults applied by DefaultMetricsConfig; these override defaults).
 	metricsEnabled = true // default
@@ -316,6 +467,13 @@ func main() {
 		flag.BoolVar(&doTrafficShaping, "do-traffic-shaping", false, "Whether to set up traffic shaping rules for peers (requires tc command and root privileges)")
 	}
 	if disableFirewallStr != "" {
 		disableFirewall = strings.ToLower(disableFirewallStr) == "true"
 	}
 	if disableFirewallStr == "" {
 		flag.BoolVar(&disableFirewall, "disable-firewall", false, "Disable WireGuard firewall rules to allow all inbound traffic on the interface")
 	}
 	if bandwidthLimitStr != "" {
 		bandwidthLimit = bandwidthLimitStr
 	}
@@ -335,6 +493,15 @@ func main() {
 	flag.Parse()
 	// Heap profiles are dumped into the configured config directory (the same
 	// directory as the config file, or /var/config as a fallback for remote-config
 	// setups) so they land on the volume the operator actually has mounted.
 	heapDir := "/var/config/heap"
 	if configFile != "" {
 		heapDir = filepath.Join(filepath.Dir(configFile), "heap")
 	}
 	go monitorMemory(1024*1024*512, heapDir) // trigger if memory usage exceeds 512MB
 	// Derive IFB device name from the WireGuard interface name (Linux limit: 15 chars)
 	ifbName = "ifb_" + interfaceName
 	if len(ifbName) > 15 {
@@ -412,9 +579,12 @@ func main() {
 		logger.Fatal("You must provide either a config file or a remote config URL, not both")
 	}
-	// clean up the reomte config URL for backwards compatibility
+	// clean up the remote config URL for backwards compatibility
 	remoteConfigURL = strings.TrimRight(remoteConfigURL, "/")
 	remoteConfigURL = strings.TrimSuffix(remoteConfigURL, "/gerbil/get-config")
-	remoteConfigURL = strings.TrimSuffix(remoteConfigURL, "/")
+	remoteConfigURL = strings.TrimSuffix(remoteConfigURL, "/gerbil/receive-bandwidth")
 	remoteConfigURL = strings.TrimSuffix(remoteConfigURL, "/gerbil")
 	remoteConfigURL = strings.TrimRight(remoteConfigURL, "/")
 	var key wgtypes.Key
 	// if generateAndSaveKeyTo is provided, generate a private key and save it to the file. if the file already exists, load the key from the file
@@ -551,6 +721,7 @@ func main() {
 	http.HandleFunc("/update-destinations", httpMetricsMiddleware("update_destinations", handleUpdateDestinations))
 	http.HandleFunc("/update-local-snis", httpMetricsMiddleware("update_local_snis", handleUpdateLocalSNIs))
 	http.HandleFunc("/healthz", httpMetricsMiddleware("healthz", handleHealthz))
 	http.HandleFunc("/router/", httpMetricsMiddleware("router", handleRouter))
 	// Register metrics endpoint only for Prometheus backend.
 	// OTel backend pushes to a collector; no /metrics endpoint needed.
@@ -732,7 +903,9 @@ func ensureWireguardInterface(wgconfig WgConfig) error {
 		logger.Warn("Failed to ensure MSS clamping: %v", err)
 	}
-	if err := ensureWireguardFirewall(); err != nil {
+	if disableFirewall {
 		logger.Warn("Firewall disabled: all inbound traffic on %s will be allowed", interfaceName)
 	} else if err := ensureWireguardFirewall(wgconfig.IpAddress); err != nil {
 		logger.Warn("Failed to ensure WireGuard firewall rules: %v", err)
 	}
@@ -908,11 +1081,18 @@ func ensureMSSClamping() error {
 	return nil
 }
-func ensureWireguardFirewall() error {
+func ensureWireguardFirewall(localIpAddress string) error {
 	// Rules to enforce:
 	// 1. Allow established/related connections (responses to our outbound traffic)
 	// 2. Allow ICMP ping packets
-	// 3. Drop all other inbound traffic from peers
+	// 3. Allow inbound traffic to ports 80/443 on the local IP only (for Traefik)
 	// 4. Drop all other inbound traffic from peers
 	// Strip any CIDR suffix so we're left with just the host IP
 	localIp := localIpAddress
 	if ip, _, err := net.ParseCIDR(localIpAddress); err == nil {
 		localIp = ip.String()
 	}
 	// Define the rules we want to ensure exist
 	rules := [][]string{
@@ -932,6 +1112,24 @@ func ensureWireguardFirewall() error {
 			"--icmp-type", "8",
 			"-j", "ACCEPT",
 		},
 		// Allow inbound HTTP to the local IP only (for Traefik)
 		{
 			"-A", "INPUT",
 			"-i", interfaceName,
 			"-p", "tcp",
 			"--dport", "80",
 			"-d", localIp,
 			"-j", "ACCEPT",
 		},
 		// Allow inbound HTTPS to the local IP only (for Traefik)
 		{
 			"-A", "INPUT",
 			"-i", interfaceName,
 			"-p", "tcp",
 			"--dport", "443",
 			"-d", localIp,
 			"-j", "ACCEPT",
 		},
 		// Drop all other inbound traffic from WireGuard interface
 		{
 			"-A", "INPUT",
@@ -1493,6 +1691,24 @@ func calculatePeerBandwidth() ([]PeerBandwidth, error) {
 	return peerBandwidths, nil
 }
 // defaultBandwidthReportBatchSize caps how many peer bandwidth readings are
 // sent in a single POST. Reporting every peer in one request grows unbounded
 // with fleet size and can exceed the remote server's request body limit,
 // which surfaces as "413 Payload Too Large" and silently drops that whole
 // report cycle. Overridable via GERBIL_BANDWIDTH_BATCH_SIZE.
 const defaultBandwidthReportBatchSize = 250
 var bandwidthReportBatchSize = loadBandwidthReportBatchSize()
 func loadBandwidthReportBatchSize() int {
 	if v := os.Getenv("GERBIL_BANDWIDTH_BATCH_SIZE"); v != "" {
 		if n, err := strconv.Atoi(v); err == nil && n > 0 {
 			return n
 		}
 	}
 	return defaultBandwidthReportBatchSize
 }
 func reportPeerBandwidth(apiURL string) error {
 	bandwidths, err := calculatePeerBandwidth()
 	if err != nil {
@@ -1501,26 +1717,47 @@ func reportPeerBandwidth(apiURL string) error {
 		return fmt.Errorf("failed to calculate peer bandwidth: %v", err)
 	}
-	jsonData, err := json.Marshal(bandwidths)
+	if len(bandwidths) == 0 {
 		return nil
 	}
 	var batchErrs []error
 	for start := 0; start < len(bandwidths); start += bandwidthReportBatchSize {
 		end := start + bandwidthReportBatchSize
 		if end > len(bandwidths) {
 			end = len(bandwidths)
 		}
 		if err := sendPeerBandwidthBatch(apiURL, bandwidths[start:end]); err != nil {
 			metrics.RecordBandwidthReport("error")
 			batchErrs = append(batchErrs, err)
 			continue
 		}
 		metrics.RecordBandwidthReport("success")
 	}
 	if len(batchErrs) > 0 {
 		return fmt.Errorf("failed to report %d bandwidth batch(es): %w", len(batchErrs), errors.Join(batchErrs...))
 	}
 	return nil
 }
 func sendPeerBandwidthBatch(apiURL string, batch []PeerBandwidth) error {
 	jsonData, err := json.Marshal(batch)
 	if err != nil {
 		metrics.RecordBandwidthReport("error")
 		return fmt.Errorf("failed to marshal bandwidth data: %v", err)
 	}
 	resp, err := http.Post(apiURL, "application/json", bytes.NewBuffer(jsonData))
 	if err != nil {
 		metrics.RecordBandwidthReport("error")
 		return fmt.Errorf("failed to send bandwidth data: %v", err)
 	}
 	defer resp.Body.Close()
 	if resp.StatusCode != http.StatusOK {
 		metrics.RecordBandwidthReport("error")
 		return fmt.Errorf("API returned non-OK status: %s", resp.Status)
 	}
 	// Record successful bandwidth report
 	metrics.RecordBandwidthReport("success")
 	return nil
 }
@@ -1549,7 +1786,7 @@ func notifyPeerChange(action, publicKey string) {
 	}
 }
-func monitorMemory(limit uint64) {
+func monitorMemory(limit uint64, heapDir string) {
 	var m runtime.MemStats
 	for {
 		runtime.ReadMemStats(&m)
@@ -1565,8 +1802,9 @@ func monitorMemory(limit uint64) {
 			// Record memory spike metric
 			metrics.RecordMemorySpike(severity)
-			f, err := os.Create(fmt.Sprintf("/var/config/heap/heap-spike-%d.pprof", time.Now().Unix()))
+			if err := os.MkdirAll(heapDir, 0o755); err != nil {
-			if err != nil {
+				log.Println("could not create heap profile directory:", err)
 			} else if f, err := os.Create(filepath.Join(heapDir, fmt.Sprintf("heap-spike-%d.pprof", time.Now().Unix()))); err != nil {
 				log.Println("could not create profile:", err)
 			} else {
 				pprof.WriteHeapProfile(f)
--- a/proxy/proxy.go
+++ b/proxy/proxy.go
@@ -11,9 +11,11 @@ import (
 	"log"
 	"net"
 	"net/http"
 	"os"
 	"strconv"
 	"strings"
 	"sync"
 	"sync/atomic"
 	"time"
 	"github.com/fosrl/gerbil/internal/metrics"
@@ -21,6 +23,46 @@ import (
 	"github.com/patrickmn/go-cache"
 )
 // defaultMaxSNIConnections caps the number of concurrent client connections
 // the SNI proxy will accept. Without a cap, a burst of connections (a
 // scanner sweep, a client reconnect storm) spawns unbounded goroutines each
 // holding copy buffers and sockets, exhausting container memory faster than
 // GC/backpressure can catch up.
 // Sized conservatively since each connection now holds up to two pooled
 // 32KB copy buffers once the buffer pool is actually honored (see
 // bufferedReader/bufferedWriter below). Overridable via
 // GERBIL_MAX_SNI_CONNECTIONS.
 const defaultMaxSNIConnections = 4096
 var maxSNIConnections = loadMaxSNIConnections()
 func loadMaxSNIConnections() int64 {
 	if v := os.Getenv("GERBIL_MAX_SNI_CONNECTIONS"); v != "" {
 		if n, err := strconv.ParseInt(v, 10, 64); err == nil && n > 0 {
 			return n
 		}
 	}
 	return defaultMaxSNIConnections
 }
 // defaultMaxSNIConnectionsPerIP caps concurrent connections from a single
 // source IP, independent of the global maxSNIConnections budget. Without
 // this, one noisy/misbehaving client (or a single scanning host) can
 // consume the entire global budget and lock out every other customer
 // sharing this proxy. Overridable via GERBIL_MAX_SNI_CONNECTIONS_PER_IP.
 const defaultMaxSNIConnectionsPerIP = 256
 var maxSNIConnectionsPerIP = loadMaxSNIConnectionsPerIP()
 func loadMaxSNIConnectionsPerIP() int64 {
 	if v := os.Getenv("GERBIL_MAX_SNI_CONNECTIONS_PER_IP"); v != "" {
 		if n, err := strconv.ParseInt(v, 10, 64); err == nil && n > 0 {
 			return n
 		}
 	}
 	return defaultMaxSNIConnectionsPerIP
 }
 // RouteRecord represents a routing configuration
 type RouteRecord struct {
 	Hostname   string
@@ -76,6 +118,18 @@ type SNIProxy struct {
 	// Buffer pool for connection piping
 	bufferPool *sync.Pool
 	// activeConnections tracks concurrent client connections so
 	// acceptConnections can enforce maxSNIConnections.
 	activeConnections atomic.Int64
 	// perIPConnections tracks concurrent connections per source IP (map[string]*atomic.Int64)
 	// so acceptConnections can enforce maxSNIConnectionsPerIP and stop one
 	// client from starving the rest. Entries are removed once a given IP's
 	// count returns to zero, so this stays bounded by currently-connected
 	// distinct IPs (itself bounded by maxSNIConnections) rather than growing
 	// with every IP ever seen.
 	perIPConnections sync.Map
 }
 type activeTunnel struct {
@@ -458,8 +512,46 @@ func (p *SNIProxy) acceptConnections() {
 			}
 		}
 		if p.activeConnections.Load() >= maxSNIConnections {
 			logger.Debug("Max concurrent SNI connections (%d) reached, rejecting connection from %s", maxSNIConnections, conn.RemoteAddr())
 			metrics.RecordSNIConnection("rejected_max_connections")
 			conn.Close()
 			continue
 		}
 		remoteHost, _, err := net.SplitHostPort(conn.RemoteAddr().String())
 		if err != nil {
 			remoteHost = conn.RemoteAddr().String()
 		}
 		counterVal, _ := p.perIPConnections.LoadOrStore(remoteHost, new(atomic.Int64))
 		perIPCounter := counterVal.(*atomic.Int64)
 		if perIPCounter.Load() >= maxSNIConnectionsPerIP {
 			logger.Debug("Max concurrent SNI connections per IP (%d) reached for %s, rejecting connection", maxSNIConnectionsPerIP, remoteHost)
 			metrics.RecordSNIConnection("rejected_per_ip_limit")
 			conn.Close()
 			continue
 		}
 		perIPCounter.Add(1)
 		p.activeConnections.Add(1)
 		metrics.RecordSNIActiveConnection(1)
 		p.wg.Add(1)
-		go p.handleConnection(conn)
+		go func() {
 			defer func() {
 				if perIPCounter.Add(-1) == 0 {
 					// Best-effort cleanup: only remove the map entry if it
 					// still holds this exact counter (a concurrent new
 					// connection from the same IP may have already bumped
 					// it back up via LoadOrStore, or replaced it after a
 					// prior race). Undercounting in that narrow race window
 					// just means one connection isn't rate-limited briefly,
 					// never unbounded growth.
 					p.perIPConnections.CompareAndDelete(remoteHost, counterVal)
 				}
 			}()
 			p.handleConnection(conn)
 		}()
 	}
 }
@@ -507,6 +599,10 @@ func (p *SNIProxy) extractSNI(conn net.Conn) (string, io.Reader, error) {
 func (p *SNIProxy) handleConnection(clientConn net.Conn) {
 	defer p.wg.Done()
 	defer clientConn.Close()
 	defer func() {
 		p.activeConnections.Add(-1)
 		metrics.RecordSNIActiveConnection(-1)
 	}()
 	metrics.RecordSNIConnection("accepted")
@@ -793,6 +889,23 @@ func (p *SNIProxy) selectStickyEndpoint(clientAddr string, endpoints []string) s
 	return endpoints[index]
 }
 // bufferedReader hides any io.WriterTo the wrapped reader implements (e.g.
 // io.MultiReader, used by peekClientHello to replay the buffered
 // ClientHello ahead of the raw connection). Without this, io.CopyBuffer
 // bypasses the caller-supplied buffer entirely and lets WriteTo drive its
 // own, uncapped allocations - defeating the point of bufferPool.
 type bufferedReader struct {
 	io.Reader
 }
 // bufferedWriter hides any io.ReaderFrom the wrapped writer implements (e.g.
 // *net.TCPConn's splice/sendfile fast path). Without this, io.CopyBuffer
 // bypasses the caller-supplied buffer here too, so each copy allocates and
 // manages its own buffer regardless of what's pooled.
 type bufferedWriter struct {
 	io.Writer
 }
 // pipe handles bidirectional data transfer between connections
 func (p *SNIProxy) pipe(hostname string, clientConn, targetConn net.Conn, clientReader io.Reader) {
 	var wg sync.WaitGroup
@@ -821,7 +934,7 @@ func (p *SNIProxy) pipe(hostname string, clientConn, targetConn net.Conn, client
 			p.bufferPool.Put(bufPtr)
 		}()
-		bytesCopied, err := io.CopyBuffer(targetConn, clientReader, *bufPtr)
+		bytesCopied, err := io.CopyBuffer(bufferedWriter{targetConn}, bufferedReader{clientReader}, *bufPtr)
 		metrics.RecordProxyBytesTransmitted("client_to_target", bytesCopied)
 		if err != nil && err != io.EOF {
 			logger.Debug("Copy client->target error: %v", err)
@@ -841,7 +954,7 @@ func (p *SNIProxy) pipe(hostname string, clientConn, targetConn net.Conn, client
 			p.bufferPool.Put(bufPtr)
 		}()
-		bytesCopied, err := io.CopyBuffer(clientConn, targetConn, *bufPtr)
+		bytesCopied, err := io.CopyBuffer(bufferedWriter{clientConn}, bufferedReader{targetConn}, *bufPtr)
 		metrics.RecordProxyBytesTransmitted("target_to_client", bytesCopied)
 		if err != nil && err != io.EOF {
 			logger.Debug("Copy target->client error: %v", err)
--- a/relay/relay.go
+++ b/relay/relay.go
@@ -1,6 +1,7 @@
 package relay
 import (
 	"bufio"
 	"bytes"
 	"context"
 	"encoding/binary"
@@ -9,8 +10,11 @@ import (
 	"io"
 	"net"
 	"net/http"
 	"os"
 	"runtime"
 	"strconv"
 	"sync"
 	"sync/atomic"
 	"time"
 	"github.com/fosrl/gerbil/internal/metrics"
@@ -59,8 +63,31 @@ type PeerDestination struct {
 }
 type DestinationConn struct {
-	conn     *net.UDPConn
+	conn *net.UDPConn
-	lastUsed time.Time
+	// lastUsed is unix nanoseconds, read/written via atomic ops since it's
 	// touched from packet workers and the response goroutine concurrently
 	// with no lock, and is also scanned for LRU eviction below.
 	lastUsed atomic.Int64
 }
 // defaultMaxUDPConnections caps the number of concurrent per-peer outbound
 // UDP sockets the relay will keep open in s.connections. Without a cap, a
 // burst of peer churn creates sockets faster than the 5-minute idle cleanup
 // can reap them, exhausting the host's ephemeral port range or fd ulimit.
 // That surfaces as "dial udp ...: resource temporarily unavailable" on every
 // subsequent packet and pegs the CPU logging the flood (outage 2026-07-03,
 // recurrence 2026-07-05). Overridable via GERBIL_MAX_UDP_CONNECTIONS.
 const defaultMaxUDPConnections = 8192
 var maxUDPConnections = loadMaxUDPConnections()
 func loadMaxUDPConnections() int64 {
 	if v := os.Getenv("GERBIL_MAX_UDP_CONNECTIONS"); v != "" {
 		if n, err := strconv.ParseInt(v, 10, 64); err == nil && n > 0 {
 			return n
 		}
 	}
 	return defaultMaxUDPConnections
 }
 // Type for storing WireGuard handshake information
@@ -137,6 +164,24 @@ const (
 	WireGuardMessageTypeTransportData       = 4
 )
 // cachedEndpointState holds the last-known endpoint fields used for change detection.
 // Timestamp is intentionally excluded since it always changes.
 type cachedEndpointState struct {
 	OlmID     string
 	NewtID    string
 	Token     string
 	IP        string
 	Port      int
 	PublicKey string
 }
 // cachedEndpointEntry wraps cachedEndpointState with a timestamp so the cache
 // can be expired after a short TTL even when the endpoint fields are unchanged.
 type cachedEndpointEntry struct {
 	state    cachedEndpointState
 	cachedAt time.Time
 }
 // --- End Types ---
 // bufferPool allows reusing buffers to reduce allocations.
@@ -153,10 +198,13 @@ type UDPProxyServer struct {
 	conn          *net.UDPConn
 	proxyMappings sync.Map // map[string]ProxyMapping where key is "ip:port"
 	connections   sync.Map // map[string]*DestinationConn where key is destination "ip:port"
-	privateKey    wgtypes.Key
+	// connectionCount mirrors len(connections) without an O(n) sync.Map walk,
-	packetChan    chan Packet
+	// so the cap check in getOrCreateConnection is cheap on the hot path.
-	ctx           context.Context
+	connectionCount atomic.Int64
-	cancel        context.CancelFunc
+	privateKey      wgtypes.Key
 	packetChan      chan Packet
 	ctx             context.Context
 	cancel          context.CancelFunc
 	// Session tracking for WireGuard peers
 	// Key format: "senderIndex:receiverIndex"
@@ -172,6 +220,12 @@ type UDPProxyServer struct {
 	// Cache for resolved UDP addresses to avoid per-packet DNS lookups
 	// Key: "ip:port" string, Value: *net.UDPAddr
 	addrCache sync.Map
 	// lastEndpointCache stores the last-known endpoint state per client (key: olmId:newtId)
 	// used to skip redundant HTTP notifications when nothing has changed.
 	lastEndpointCache sync.Map
 	// notifyChan is the async queue for hole-punch endpoint notifications.
 	// Dedicated notifier workers drain this channel and perform the HTTP call.
 	notifyChan chan ClientEndpoint
 	// ReachableAt is the URL where this server can be reached
 	ReachableAt string
 }
@@ -184,6 +238,7 @@ func NewUDPProxyServer(parentCtx context.Context, addr, serverURL string, privat
 		serverURL:   serverURL,
 		privateKey:  privateKey,
 		packetChan:  make(chan Packet, 50000), // Increased from 1000 to handle high throughput
 		notifyChan:  make(chan ClientEndpoint, 1000),
 		ReachableAt: reachableAt,
 		ctx:         ctx,
 		cancel:      cancel,
@@ -192,10 +247,15 @@ func NewUDPProxyServer(parentCtx context.Context, addr, serverURL string, privat
 // Start sets up the UDP listener, worker pool, and begins reading packets.
 func (s *UDPProxyServer) Start() error {
-	// Fetch initial mappings.
+	// Fetch initial mappings asynchronously so a large (potentially 100MB+)
-	if err := s.fetchInitialMappings(); err != nil {
+	// response does not block the UDP listener from coming up. Any packets
-		return fmt.Errorf("failed to fetch initial mappings: %v", err)
+	// arriving for unknown mappings before the load completes will simply
-	}
+	// log and be repopulated via the hole-punch path.
 	go func() {
 		if err := s.fetchInitialMappings(); err != nil {
 			logger.Error("Failed to fetch initial mappings: %v", err)
 		}
 	}()
 	udpAddr, err := net.ResolveUDPAddr("udp", s.addr)
 	if err != nil {
@@ -237,6 +297,11 @@ func (s *UDPProxyServer) Start() error {
 	// Start the hole punch rate limiter cleanup routine
 	go s.cleanupHolePunchRateLimiter()
 	// Start async endpoint notifier workers (HTTP calls off the hot path)
 	for i := 0; i < 5; i++ {
 		go s.endpointNotifierWorker()
 	}
 	return nil
 }
@@ -375,7 +440,43 @@ func (s *UDPProxyServer) packetWorker() {
 				ClientPublicKey:   msg.PublicKey,
 			}
 			logger.Debug("Created endpoint from packet remoteAddr %s: IP=%s, Port=%d", packet.remoteAddr.String(), endpoint.IP, endpoint.Port)
-			s.notifyServer(endpoint)
+
 			// Check if anything meaningful changed before queuing an HTTP notification.
 			// The cache expires after 2.5 s so the server always receives a fresh
 			// timestamp within its 5-second staleness window.
 			const endpointCacheTTL = 2500 * time.Millisecond
 			cacheKey := endpoint.OlmID + ":" + endpoint.NewtID
 			newState := cachedEndpointState{
 				OlmID:     endpoint.OlmID,
 				NewtID:    endpoint.NewtID,
 				Token:     endpoint.Token,
 				IP:        endpoint.IP,
 				Port:      endpoint.Port,
 				PublicKey: endpoint.ClientPublicKey,
 			}
 			if cached, ok := s.lastEndpointCache.Load(cacheKey); ok {
 				entry := cached.(cachedEndpointEntry)
 				if entry.state == newState && time.Since(entry.cachedAt) < endpointCacheTTL {
 					// Endpoint unchanged and cache still fresh - skip the HTTP call.
 					logger.Debug("Endpoint unchanged for %s, skipping notification", cacheKey)
 					metrics.RecordHolePunchEvent(relayIfname, "deduplicated")
 					s.clearSessionsForIP(endpoint.IP)
 					metrics.RecordHolePunchEvent(relayIfname, "success")
 					bufferPool.Put(packet.data[:1500])
 					continue
 				}
 			}
 			s.lastEndpointCache.Store(cacheKey, cachedEndpointEntry{state: newState, cachedAt: time.Now()})
 			// Queue the notification asynchronously so the hot path is not blocked by HTTP.
 			select {
 			case s.notifyChan <- endpoint:
 			case <-s.ctx.Done():
 				// shutting down
 			default:
 				logger.Debug("Notification queue full, dropping hole punch notification for %s:%d", endpoint.IP, endpoint.Port)
 				metrics.RecordHolePunchEvent(relayIfname, "queue_full")
 			}
 			s.clearSessionsForIP(endpoint.IP) // Clear sessions for this IP to allow re-establishment
 			metrics.RecordHolePunchEvent(relayIfname, "success")
 		}
@@ -384,6 +485,22 @@ func (s *UDPProxyServer) packetWorker() {
 	}
 }
 // endpointNotifierWorker drains the notifyChan and performs the HTTP notification for each
 // hole-punch endpoint. Running several of these keeps latency low even when the server is slow.
 func (s *UDPProxyServer) endpointNotifierWorker() {
 	for {
 		select {
 		case endpoint, ok := <-s.notifyChan:
 			if !ok {
 				return
 			}
 			s.notifyServer(endpoint)
 		case <-s.ctx.Done():
 			return
 		}
 	}
 }
 // decryptMessage decrypts the message using the server's private key
 func (s *UDPProxyServer) decryptMessage(encMsg EncryptedHolePunchMessage) ([]byte, error) {
 	// Parse the ephemeral public key
@@ -419,6 +536,7 @@ func (s *UDPProxyServer) decryptMessage(encMsg EncryptedHolePunchMessage) ([]byt
 }
 func (s *UDPProxyServer) fetchInitialMappings() error {
 	logger.Info("Requesting initial proxy mappings")
 	body := bytes.NewBuffer([]byte(fmt.Sprintf(`{"publicKey": "%s"}`, s.privateKey.PublicKey().String())))
 	resp, err := http.Post(s.serverURL+"/gerbil/get-all-relays", "application/json", body)
 	if err != nil {
@@ -430,24 +548,82 @@ func (s *UDPProxyServer) fetchInitialMappings() error {
 		return fmt.Errorf("server returned non-OK status: %d, body: %s",
 			resp.StatusCode, string(body))
 	}
-	data, err := io.ReadAll(resp.Body)
+	logger.Info("Received initial mappings, streaming decode")
 	// Stream-decode the response instead of buffering the entire body
 	// (which can be 100MB+) and then re-walking it with json.Unmarshal.
 	// This both lowers peak memory and lets us start populating the
 	// sync.Map as entries arrive.
 	dec := json.NewDecoder(bufio.NewReaderSize(resp.Body, 1<<20))
 	// Expect opening '{' of the top-level object.
 	tok, err := dec.Token()
 	if err != nil {
-		return fmt.Errorf("failed to read response body: %v", err)
+		return fmt.Errorf("failed to read opening token: %v", err)
 	}
-	logger.Info("Received initial mappings: %s", string(data))
+	if d, ok := tok.(json.Delim); !ok || d != '{' {
-	var initialMappings InitialMappings
+		return fmt.Errorf("expected '{' at top level, got %v", tok)
 	if err := json.Unmarshal(data, &initialMappings); err != nil {
 		return fmt.Errorf("failed to unmarshal initial mappings: %v", err)
 	}
-	// Store mappings in our sync.Map.
+
-	for key, mapping := range initialMappings.Mappings {
+	count := 0
-		// Initialize LastUsed timestamp for initial mappings
+	now := time.Now()
-		mapping.LastUsed = time.Now()
+
-		s.proxyMappings.Store(key, mapping)
+	for dec.More() {
 		keyTok, err := dec.Token()
 		if err != nil {
 			return fmt.Errorf("failed to read top-level key: %v", err)
 		}
 		key, ok := keyTok.(string)
 		if !ok {
 			return fmt.Errorf("expected string key at top level, got %T", keyTok)
 		}
 		if key != "mappings" {
 			// Skip unknown top-level fields without materializing them.
 			var skip json.RawMessage
 			if err := dec.Decode(&skip); err != nil {
 				return fmt.Errorf("failed to skip field %q: %v", key, err)
 			}
 			continue
 		}
 		// Expect opening '{' of the mappings object.
 		tok, err := dec.Token()
 		if err != nil {
 			return fmt.Errorf("failed to read mappings open: %v", err)
 		}
 		if d, ok := tok.(json.Delim); !ok || d != '{' {
 			return fmt.Errorf("expected '{' for mappings, got %v", tok)
 		}
 		for dec.More() {
 			mapKeyTok, err := dec.Token()
 			if err != nil {
 				return fmt.Errorf("failed to read mapping key: %v", err)
 			}
 			mapKey, ok := mapKeyTok.(string)
 			if !ok {
 				return fmt.Errorf("expected string mapping key, got %T", mapKeyTok)
 			}
 			var mapping ProxyMapping
 			if err := dec.Decode(&mapping); err != nil {
 				return fmt.Errorf("failed to decode mapping %q: %v", mapKey, err)
 			}
 			mapping.LastUsed = now
 			s.proxyMappings.Store(mapKey, mapping)
 			count++
 		}
 		// Consume closing '}' of mappings object.
 		if _, err := dec.Token(); err != nil {
 			return fmt.Errorf("failed to read mappings close: %v", err)
 		}
 	}
-	metrics.RecordProxyInitialMappings(relayIfname, int64(len(initialMappings.Mappings)))
+
-	metrics.RecordProxyMapping(relayIfname, int64(len(initialMappings.Mappings)))
+	metrics.RecordProxyInitialMappings(relayIfname, int64(count))
-	logger.Info("Loaded %d initial proxy mappings", len(initialMappings.Mappings))
+	metrics.RecordProxyMapping(relayIfname, int64(count))
 	logger.Info("Loaded %d initial proxy mappings", count)
 	return nil
 }
@@ -715,10 +891,17 @@ func (s *UDPProxyServer) getOrCreateConnection(destAddr *net.UDPAddr, remoteAddr
 	// Check if we have an existing connection
 	if conn, ok := s.connections.Load(key); ok {
 		destConn := conn.(*DestinationConn)
-		destConn.lastUsed = time.Now()
+		destConn.lastUsed.Store(time.Now().UnixNano())
 		return destConn.conn, nil
 	}
 	// Enforce a hard cap on concurrent sockets so a burst of peer churn can't
 	// exhaust the host's ephemeral ports/fds. Evict the least-recently-used
 	// connection to make room instead of growing unbounded.
 	if s.connectionCount.Load() >= maxUDPConnections {
 		s.evictLRUConnection()
 	}
 	// Create new connection
 	newConn, err := net.DialUDP("udp", nil, destAddr)
 	if err != nil {
@@ -726,11 +909,17 @@ func (s *UDPProxyServer) getOrCreateConnection(destAddr *net.UDPAddr, remoteAddr
 		return nil, fmt.Errorf("failed to create UDP connection: %v", err)
 	}
-	// Store the new connection
+	destConn := &DestinationConn{conn: newConn}
-	s.connections.Store(key, &DestinationConn{
+	destConn.lastUsed.Store(time.Now().UnixNano())
-		conn:     newConn,
+
-		lastUsed: time.Now(),
+	// Store the new connection. If another goroutine raced us and already
-	})
+	// created one for this key, close ours and use theirs instead.
 	if existing, loaded := s.connections.LoadOrStore(key, destConn); loaded {
 		newConn.Close()
 		return existing.(*DestinationConn).conn, nil
 	}
 	s.connectionCount.Add(1)
 	metrics.RecordUDPConnection(relayIfname, 1)
 	// Start a goroutine to handle responses
 	go s.handleResponses(newConn, destAddr, remoteAddr)
@@ -738,6 +927,33 @@ func (s *UDPProxyServer) getOrCreateConnection(destAddr *net.UDPAddr, remoteAddr
 	return newConn, nil
 }
 // evictLRUConnection closes and removes the least-recently-used destination
 // connection so a new one can be created under the concurrent connection cap.
 func (s *UDPProxyServer) evictLRUConnection() {
 	var oldestKey interface{}
 	var oldestConn *DestinationConn
 	var oldestTime int64
 	s.connections.Range(func(key, value interface{}) bool {
 		destConn := value.(*DestinationConn)
 		lu := destConn.lastUsed.Load()
 		if oldestKey == nil || lu < oldestTime {
 			oldestKey = key
 			oldestConn = destConn
 			oldestTime = lu
 		}
 		return true
 	})
 	if oldestKey != nil {
 		s.connections.Delete(oldestKey)
 		oldestConn.conn.Close()
 		s.connectionCount.Add(-1)
 		metrics.RecordUDPConnection(relayIfname, -1)
 		metrics.RecordProxyCleanupRemoved(relayIfname, "conn_evicted", 1)
 	}
 }
 func (s *UDPProxyServer) handleResponses(conn *net.UDPConn, destAddr *net.UDPAddr, remoteAddr *net.UDPAddr) {
 	buffer := make([]byte, 1500)
 	for {
@@ -789,22 +1005,32 @@ func (s *UDPProxyServer) handleResponses(conn *net.UDPConn, destAddr *net.UDPAdd
 // Add a cleanup method to periodically remove idle connections
 func (s *UDPProxyServer) cleanupIdleConnections() {
-	ticker := time.NewTicker(5 * time.Minute)
+	// Ticker interval and idle threshold were previously 5min/10min, meaning
 	// a socket could sit open for up to 15 minutes after going idle. Under a
 	// reconnect/churn burst that lag is enough to exhaust ephemeral ports
 	// before cleanup catches up, so both are tightened here.
 	ticker := time.NewTicker(1 * time.Minute)
 	defer ticker.Stop()
 	for {
 		select {
 		case <-ticker.C:
 			cleanupStart := time.Now()
-			now := time.Now()
+			now := time.Now().UnixNano()
 			removed := int64(0)
 			s.connections.Range(func(key, value interface{}) bool {
 				destConn := value.(*DestinationConn)
-				if now.Sub(destConn.lastUsed) > 10*time.Minute {
+				if now-destConn.lastUsed.Load() > int64(5*time.Minute) {
 					destConn.conn.Close()
 					s.connections.Delete(key)
-					metrics.RecordProxyCleanupRemoved(relayIfname, "conn", 1)
+					removed++
 				}
 				return true
 			})
 			if removed > 0 {
 				s.connectionCount.Add(-removed)
 				metrics.RecordUDPConnection(relayIfname, -removed)
 				metrics.RecordProxyCleanupRemoved(relayIfname, "conn", removed)
 			}
 			metrics.RecordProxyIdleCleanupDuration(relayIfname, "conn", time.Since(cleanupStart).Seconds())
 		case <-s.ctx.Done():
 			return
@@ -966,6 +1192,10 @@ func (s *UDPProxyServer) clearConnectionsForWGIP(wgIP string) {
 	for _, key := range keysToDelete {
 		s.connections.Delete(key)
 	}
 	if len(keysToDelete) > 0 {
 		s.connectionCount.Add(-int64(len(keysToDelete)))
 		metrics.RecordUDPConnection(relayIfname, -int64(len(keysToDelete)))
 	}
 	logger.Info("Cleared %d connections for WG IP: %s", len(keysToDelete), wgIP)
 }
@@ -1163,33 +1393,56 @@ func (s *UDPProxyServer) trackCommunicationPattern(fromAddr, toAddr *net.UDPAddr
 // tryRebuildSession attempts to rebuild a WireGuard session from communication patterns
 func (s *UDPProxyServer) tryRebuildSession(pattern *CommunicationPattern) {
 	// Require both indices and a minimum amount of bidirectional traffic
 	if pattern.ClientIndex == 0 || pattern.DestIndex == 0 || pattern.PacketCount < 4 {
 		return
 	}
 	// Check if we have bidirectional communication within a reasonable time window
 	timeDiff := pattern.LastFromClient.Sub(pattern.LastFromDest)
 	if timeDiff < 0 {
 		timeDiff = -timeDiff
 	}
-
+	if timeDiff >= 30*time.Second {
-	// Only rebuild if we have recent bidirectional communication and both indices
+		return
 	if timeDiff < 30*time.Second && pattern.ClientIndex != 0 && pattern.DestIndex != 0 && pattern.PacketCount >= 4 {
 		// Create session mapping: client's index maps to destination
 		sessionKey := fmt.Sprintf("%d:%d", pattern.DestIndex, pattern.ClientIndex)
 		// Check if we already have this session
 		session := &WireGuardSession{
 			ReceiverIndex: pattern.DestIndex,
 			SenderIndex:   pattern.ClientIndex,
 			DestAddr:      pattern.ToDestination,
 			LastSeen:      time.Now(),
 		}
 		if _, loaded := s.wgSessions.LoadOrStore(sessionKey, session); loaded {
 			s.wgSessions.Store(sessionKey, session)
 		} else {
 			metrics.RecordSession(relayIfname, 1)
 			metrics.RecordSessionRebuilt(relayIfname)
 		}
 		logger.Info("Rebuilt WireGuard session from communication pattern: %s -> %s (packets: %d)",
 			sessionKey, pattern.ToDestination.String(), pattern.PacketCount)
 	}
 	sessionKey := fmt.Sprintf("%d:%d", pattern.DestIndex, pattern.ClientIndex)
 	destStr := pattern.ToDestination.String()
 	// Fast path: if a matching session already exists, just refresh LastSeen and bail out.
 	// This prevents log spam and repeated work for every packet of an established flow.
 	if existing, ok := s.wgSessions.Load(sessionKey); ok {
 		sess := existing.(*WireGuardSession)
 		if da := sess.GetDestAddr(); da != nil && da.String() == destStr {
 			sess.UpdateLastSeen()
 			// Make sure the receiver-index fast-path is populated so future packets
 			// don't keep falling back to broadcast + pattern tracking.
 			if _, indexed := s.sessionsByReceiverIndex.Load(pattern.ClientIndex); !indexed {
 				s.sessionsByReceiverIndex.Store(pattern.ClientIndex, sess)
 			}
 			return
 		}
 	}
 	// Create or replace the session mapping
 	session := &WireGuardSession{
 		ReceiverIndex: pattern.DestIndex,
 		SenderIndex:   pattern.ClientIndex,
 		DestAddr:      pattern.ToDestination,
 		LastSeen:      time.Now(),
 	}
 	if _, loaded := s.wgSessions.LoadOrStore(sessionKey, session); loaded {
 		s.wgSessions.Store(sessionKey, session)
 	} else {
 		metrics.RecordSession(relayIfname, 1)
 		metrics.RecordSessionRebuilt(relayIfname)
 	}
 	// Index by client receiver index so the transport-data fast path can find it.
 	s.sessionsByReceiverIndex.Store(pattern.ClientIndex, session)
 	logger.Info("Rebuilt WireGuard session from communication pattern: %s -> %s (packets: %d)",
 		sessionKey, destStr, pattern.PacketCount)
 }
 // cleanupIdleCommunicationPatterns periodically removes idle communication patterns