feat(vault01/gretap): gretap for hackaton

machines/vault01/networking.nix

@@ -3,6 +3,7 @@
   lib,
   meta,
   name,
+  config,
   ...
 }:
 
@@ -169,6 +170,30 @@ in
         "10-enp67s0f0np0" = {
           name = "enp67s0f0np0";
           linkConfig.Promiscuous = true;
+          networkConfig = {
+            Bridge = "br0";
+
+            LinkLocalAddressing = false;
+            LLDP = false;
+            EmitLLDP = false;
+            IPv6AcceptRA = false;
+            IPv6SendRA = false;
+          };
+        };
+        "50-gretap1" = {
+          name = "gretap1";
+          networkConfig = {
+            Bridge = "br0";
+
+            LinkLocalAddressing = false;
+            LLDP = false;
+            EmitLLDP = false;
+            IPv6AcceptRA = false;
+            IPv6SendRA = false;
+          };
+        };
+        "50-br0" = {
+          name = "br0";
           networkConfig = {
             VLAN = builtins.attrNames vlans;
 
@@ -179,9 +204,56 @@ in
             IPv6SendRA = false;
           };
         };
+        "50-wg0" = {
+          name = "wg0";
+          address = [ "10.10.17.1/30" ];
+          networkConfig.Tunnel = "gretap1";
+        };
       } // (mapAttrs' mkNetwork vlans);
 
-      netdevs = mapAttrs' mkNetdev vlans;
+      netdevs = {
+        "50-gretap1" = {
+          netdevConfig = {
+            Name = "gretap1";
+            Kind = "gretap";
+          };
+          tunnelConfig = {
+            Local = "10.10.17.1";
+            Remote = "10.10.17.2";
+          };
+        };
+        "50-br0" = {
+          netdevConfig = {
+            Name = "br0";
+            Kind = "bridge";
+          };
+          bridgeConfig = {
+            VLANFiltering = false;
+            STP = false;
+          };
+        };
+        "50-wg0" = {
+          netdevConfig = {
+            Name = "wg0";
+            Kind = "wireguard";
+          };
+          wireguardConfig = {
+            ListenPort = 1194;
+            PrivateKeyFile = config.age.secrets."wg-key".path;
+          };
+
+          wireguardPeers = [
+            {
+              wireguardPeerConfig = {
+                AllowedIPs = [
+                  "10.10.17.0/30"
+                ];
+                PublicKey = "g6S3gBx1Hf2iX41tokD+m8WfzJJTTcsKifOkn+Wcd00=";
+              };
+            }
+          ];
+        };
+      } // mapAttrs' mkNetdev vlans;
     };
 
     services = {
@@ -248,10 +320,16 @@ in
       };
     };
     firewall = {
-      allowedUDPPorts = [ 67 ];
+      allowedUDPPorts = [
+        67
+        1194
+      ];
       checkReversePath = false;
     };
   };
 
+  age.secrets."wg-key".owner = "systemd-network";
+  users.users."systemd-network".extraGroups = [ "keys" ];
+
   boot.kernel.sysctl."net.ipv4.ip_forward" = true;
 }

machines/vault01/secrets/secrets.nix

@@ -8,4 +8,5 @@
   "radius-private_key_password_file"
   "eatonmon-password_file"
   "radius-ap-radius-secret_file"
+  "wg-key"
 ]