From f22580dd26f44d9a743a928fcdb2a87fa359aaad Mon Sep 17 00:00:00 2001
From: catvayor <catvayor@katvayor.net>
Date: Thu, 2 May 2024 10:39:19 +0200
Subject: [PATCH] fix(vlans): activate things to bypass vlan limit

---
 machines/vault01/networking.nix | 30 +++++++++++++++++++++++-------
 1 file changed, 23 insertions(+), 7 deletions(-)

diff --git a/machines/vault01/networking.nix b/machines/vault01/networking.nix
index 55528fb..fb87530 100644
--- a/machines/vault01/networking.nix
+++ b/machines/vault01/networking.nix
@@ -1,4 +1,5 @@
 {
+  pkgs,
   lib,
   meta,
   name,
@@ -49,12 +50,11 @@ let
         Id = vlan;
         address = [ ];
         extraNetwork = {
-          networkConfig.DHCPServer = "yes";
-          dhcpServerConfig = {
-            EmitRouter = true;
-            Router = "10.0.0.1";
-            EmitDNS = true;
-            DNS = "10.0.0.1";
+          networkConfig = {
+            LinkLocalAddressing = "no";
+          };
+          linkConfig = {
+            Promiscuous = true;
           };
           addresses = [
             {
@@ -118,7 +118,7 @@ let
 
       extraNetwork.networkConfig.DHCPServer = "yes";
     };
-  } // builtins.listToAttrs (builtins.genList mkUserVlan 10); # 850 when we can
+  } // builtins.listToAttrs (builtins.genList mkUserVlan 850); # 850 when we can
 in
 
 {
@@ -151,6 +151,7 @@ in
       };
       "10-enp67s0f0np0" = {
         name = "enp67s0f0np0";
+        linkConfig.Promiscuous = true;
         networkConfig = {
           VLAN = builtins.attrNames vlans;
 
@@ -166,5 +167,20 @@ in
     netdevs = mapAttrs' mkNetdev vlans;
   };
 
+  systemd.services.ethtoolConfig = {
+    wantedBy = [ "systemd-networkd.service" ];
+    after = [ "sys-subsystem-net-devices-enp67s0f0np0.device" ];
+    bindsTo = [ "sys-subsystem-net-devices-enp67s0f0np0.device" ];
+    script = ''
+      ${lib.getExe pkgs.ethtool} -K enp67s0f0np0 rxvlan off
+      ${lib.getExe pkgs.ethtool} -K enp67s0f0np0 txvlan off
+      ${lib.getExe pkgs.ethtool} -K enp67s0f0np0 rx-vlan-filter off
+      ${lib.getExe pkgs.ethtool} -K enp67s0f0np0 rx-vlan-offload off
+      ${lib.getExe pkgs.ethtool} -K enp67s0f0np0 tx-vlan-offload off
+      ${lib.getExe pkgs.ethtool} -K enp67s0f0np0 tx-vlan-stag-hw-insert off
+      echo "Hardware for enp67s0f0np0 configured"
+    '';
+  };
+
   networking.firewall.allowedUDPPorts = [ 67 ];
 }