diff --git a/client/internal/ebpf/ebpf/bpf_bpfeb.o b/client/internal/ebpf/ebpf/bpf_bpfeb.o
index 6e9cda44a..7433ad740 100644
Binary files a/client/internal/ebpf/ebpf/bpf_bpfeb.o and b/client/internal/ebpf/ebpf/bpf_bpfeb.o differ
diff --git a/client/internal/ebpf/ebpf/bpf_bpfel.o b/client/internal/ebpf/ebpf/bpf_bpfel.o
index 6338f4774..779f43a00 100644
Binary files a/client/internal/ebpf/ebpf/bpf_bpfel.o and b/client/internal/ebpf/ebpf/bpf_bpfel.o differ
diff --git a/client/internal/ebpf/ebpf/src/dns_fwd.c b/client/internal/ebpf/ebpf/src/dns_fwd.c
index 5f3fbcc32..9f8de2001 100644
--- a/client/internal/ebpf/ebpf/src/dns_fwd.c
+++ b/client/internal/ebpf/ebpf/src/dns_fwd.c
@@ -52,11 +52,14 @@ int xdp_dns_fwd(struct iphdr  *ip, struct udphdr *udp) {
 
     if (udp->dest == GENERAL_DNS_PORT && ip->daddr == dns_ip) {
         udp->dest = dns_port;
+        // Clear the now-stale checksum; zero means "not computed" for IPv4.
+        udp->check = 0;
         return XDP_PASS;
     }
 
     if (udp->source == dns_port && ip->saddr == dns_ip) {
         udp->source = GENERAL_DNS_PORT;
+        udp->check = 0;
         return XDP_PASS;
     }
 
diff --git a/client/internal/ebpf/ebpf/src/wg_proxy.c b/client/internal/ebpf/ebpf/src/wg_proxy.c
index 88fea65cf..5e7474928 100644
--- a/client/internal/ebpf/ebpf/src/wg_proxy.c
+++ b/client/internal/ebpf/ebpf/src/wg_proxy.c
@@ -50,5 +50,11 @@ int xdp_wg_proxy(struct iphdr  *ip, struct udphdr *udp) {
     __be16 new_dst_port = htons(proxy_port);
     udp->dest = new_dst_port;
     udp->source = new_src_port;
+
+    // The ports are covered by the UDP checksum. This is an IPv4 loopback hop
+    // and the payload is already integrity-protected, so clear the checksum (a
+    // zero UDP checksum means "not computed" for IPv4) rather than leave a
+    // stale value the kernel would drop as UDP_CSUM.
+    udp->check = 0;
 	return XDP_PASS;
 }