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[client] Clamp MSS on outbound traffic (#4735)

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This commit is contained in:
Viktor Liu
2025-11-04 17:18:51 +01:00
committed by GitHub
parent 679c58ce47
commit 45c25dca84
24 changed files with 804 additions and 134 deletions
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8
client/firewall/iptables/state_linux.go
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@@ -4,6 +4,7 @@ import (
"fmt"
"sync"
"github.com/netbirdio/netbird/client/iface"
"github.com/netbirdio/netbird/client/iface/wgaddr"
)
@@ -11,6 +12,7 @@ type InterfaceState struct {
NameStr string `json:"name"`
WGAddress wgaddr.Address `json:"wg_address"`
UserspaceBind bool `json:"userspace_bind"`
MTU uint16 `json:"mtu"`
}
func (i *InterfaceState) Name() string {
@@ -42,7 +44,11 @@ func (s *ShutdownState) Name() string {
}
func (s *ShutdownState) Cleanup() error {
ipt, err := Create(s.InterfaceState)
mtu := s.InterfaceState.MTU
if mtu == 0 {
mtu = iface.DefaultMTU
}
ipt, err := Create(s.InterfaceState, mtu)
if err != nil {
return fmt.Errorf("create iptables manager: %w", err)
}