Add configurable MTU option

jgiannuzzi · May 22, 2023 · 518abc2 · 518abc2
1 parent 291a578
commit 518abc2
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Showing 2 changed files with 3 additions and 1 deletion.
diff --git a/README.md b/README.md
@@ -39,6 +39,7 @@ It connects to a regular Wireguard server running on `10.8.43.5:58120` with this
 PrivateKey = WJiRwPPp1NnNl1PbEAtH0yeG160xxPXXe+8OFxk6H1o=
 Address = 192.168.4.1/32
 ListenPort = 58120
+MTU = 1420
 
 [Peer]
 PublicKey = +t6LAA9uaC1RXp2GzXQKCuwkys6Q2188EnAgU26P6xc=

diff --git a/main.go b/main.go
@@ -36,6 +36,7 @@ func main() {
  wgPublicKey := flag.String("wg-public-key", "", "Wireguard public key")
  wgEndpoint := flag.String("wg-endpoint", "", "Wireguard endpoint")
  wgKeepalive := flag.Int("wg-keepalive", 0, "Wireguard keepalive")
+ wgMtu := flag.Int("wg-mtu", 1420, "Wireguard MTU")
  logLevelString := flag.String("log-level", "info", "Log level")
  showVersion := flag.Bool("version", false, "Show version")
  flag.DurationVar(&udpTimeout, "udp-timeout", 2*time.Minute, "UDP timeout")
@@ -77,7 +78,7 @@ func main() {
  tun, tnet, err := netstack.CreateNetTUN(
  []netip.Addr{netip.MustParseAddr(*wgLocalIP)},
  []netip.Addr{},
- 1420,
+ *wgMtu,
  )
  if err != nil {
  logrus.Fatalf("Error creating tunnel interface: %s", err)