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| author | Mel <mel@rnrd.eu> | 2026-04-24 03:24:14 +0200 |
|---|---|---|
| committer | Mel <mel@rnrd.eu> | 2026-04-24 03:30:20 +0200 |
| commit | 02eff1a9eff0db1161b83ae6924d8e0892de7477 (patch) | |
| tree | 4e599024271b976f20b8247264672aa543dfb23d /modules/tunnel | |
| parent | 9e65e6d758b97a59688b2d7f7734d457f40a1acf (diff) | |
| download | network-02eff1a9eff0db1161b83ae6924d8e0892de7477.tar.zst network-02eff1a9eff0db1161b83ae6924d8e0892de7477.zip | |
Set MTU on all tunnel interfaces on ingress node
Signed-off-by: Mel <mel@rnrd.eu>
Diffstat (limited to 'modules/tunnel')
| -rw-r--r-- | modules/tunnel/ingress.nix | 13 |
1 files changed, 9 insertions, 4 deletions
diff --git a/modules/tunnel/ingress.nix b/modules/tunnel/ingress.nix index a1260c8..8a6ae3b 100644 --- a/modules/tunnel/ingress.nix +++ b/modules/tunnel/ingress.nix @@ -26,9 +26,10 @@ let ingressName = index: "tunnel-ingress${toString index}"; egressName = "tunnel-egress0"; egressAddress = "10.123.255.1/16"; # /16 encompasses all possible subnet addresses - egressMTU = 1400; egressHost = name: "${name}.rnrd.eu"; + + mtu = 1400; in { boot.kernel.sysctl = { @@ -69,6 +70,10 @@ in "10-${ingressName index}" = { name = ingressName index; address = [ (addressFromTemplate index ownAddress 24) ]; + linkConfig = { + RequiredForOnline = "no"; + MTUBytes = toString mtu; + }; routingPolicyRules = [ { IncomingInterface = ingressName index; @@ -91,8 +96,8 @@ in }; linkConfig = { ActivationPolicy = "up"; - RequiredForOnline = "no"; # does not count as online - MTUBytes = toString egressMTU; + RequiredForOnline = "no"; + MTUBytes = toString mtu; }; routes = [ { @@ -143,11 +148,11 @@ in settings = { inbounds = [ { + inherit mtu; type = "tun"; tag = inboundName; interface_name = egressName; address = [ egressAddress ]; - mtu = egressMTU; stack = "gvisor"; auto_route = false; # we route manually strict_route = false; |