From 6e041b2d990841fb8b641efff7000443d57af101 Mon Sep 17 00:00:00 2001
From: Joakim Repomaa <joakim@repomaa.com>
Date: Sun, 2 Feb 2025 22:15:54 +0200
Subject: [PATCH] apu: setup transport layout offloads for tailscale

---
 hosts/apu/configuration.nix | 13 ++++++++++++-
 1 file changed, 12 insertions(+), 1 deletion(-)

diff --git a/hosts/apu/configuration.nix b/hosts/apu/configuration.nix
index fd5ab08..8aaf3d1 100644
--- a/hosts/apu/configuration.nix
+++ b/hosts/apu/configuration.nix
@@ -2,7 +2,7 @@
 # your system. Help is availanodev";
 # https://search.nixos.org/options and in the NixOS manual (`nixos-help`).
 
-{ lib, pkgs, ... }:
+{ lib, pkgs, config, ... }:
 let
   services = {
     ssh = { tcp = [ 22 ]; };
@@ -205,6 +205,17 @@ in
     } // vlanNetworks;
   };
 
+  services.networkd-dispatcher = {
+    enable = true;
+    rules."50-tailscale" = {
+      onState = [ "routable" ];
+      script = ''
+        #!${pkgs.runtimeShell}
+        ${pkgs.ethtool}/bin/ethtool -K ${config.systemd.network.links."10-extern0".linkConfig.Name} rx-udp-gro-forwarding on rx-gro-list off
+      '';
+    };
+  };
+
   time.timeZone = "Europe/Helsinki";
 
   users.users.jokke = {