diff --git a/hosts/g2/configuration.nix b/hosts/g2/configuration.nix
index ed41ac9..f98820f 100644
--- a/hosts/g2/configuration.nix
+++ b/hosts/g2/configuration.nix
@@ -6,7 +6,14 @@
       ./hardware-configuration.nix
       ../modules/nasp.nix
     ];
-  nasp.serial = 2;
+  nasp = {
+    serial = 2;
+    network = {
+      eth0Name = "eno1";
+      eth1Name = "eno2";
+      eth2Name = "enp2s0np0";
+    };
+  };
   boot.supportedFilesystems = [ "zfs" ];
   boot.zfs.forceImportRoot = false;
   networking.hostId = "b500d22c";
diff --git a/hosts/modules/nasp.nix b/hosts/modules/nasp.nix
index b95dc48..95787a7 100644
--- a/hosts/modules/nasp.nix
+++ b/hosts/modules/nasp.nix
@@ -2,6 +2,7 @@
 
 let
   mainCfg = config.nasp;
+  networkCfg = mainCfg.network;
   hostName = ("g" + (builtins.toString mainCfg.serial));
   ipSuffix = (builtins.toString (mainCfg.serial + 100));
   dnew = (pkgs.writeShellScriptBin "dnew" (builtins.readFile ./scripts/dnew));
@@ -12,6 +13,20 @@ in
       type = lib.types.int;
       description = "Serial of the machine (gX)";
     };
+    network = {
+      eth0Name = lib.mkOption {
+        type = lib.types.str;
+        description = "Name of eth0 (192.168.16.0/24)";
+      };
+      eth1Name = lib.mkOption {
+        type = lib.types.str;
+        description = "Name of eth1 (thunet)";
+      };
+      eth2Name = lib.mkOption {
+        type = lib.types.str;
+        description = "Name of the RoCE NIC";
+      };
+    };
   };
 
   # inplementation
@@ -40,41 +55,45 @@ in
   ## networking
   networking.nameservers = [ "192.168.16.118" ];
   services.resolved.enable = true;
-  networking.networkmanager.enable = true;
-  networking.interfaces = {
-    eno1.wakeOnLan.enable = true;
-    eno1.useDHCP = true;
-    eno1.ipv4 = {
-      addresses = [
-        {
-          address = "192.168.16.${ipSuffix}";
-          prefixLength = 24;
-        }
-      ];
-      routes = [
-        {
-          address = "0.0.0.0";
-          prefixLength = 0;
-          via = "192.168.16.118";
-          options = { metric = "90"; };
-        }
-      ];
+  networking.networkmanager.enable = false;
+  networking.useDHCP = false;
+  systemd.network.enable = true;
+  systemd.network.networks."10-eth0" = {
+    matchConfig.Name = networkCfg.eth0Name;
+    networkConfig = {
+      DHCP = "no";
+      IPv6AcceptRA = true;
     };
-    eno1.ipv6.routes = [
+    address = [ "192.168.16.${ipSuffix}/24" ];
+    routes = [
       {
-        address = "::";
-        prefixLength = 0;
-        via = "fe80::2eea:7fff:feec:4689";
-        options = { metric = "90"; };
+        routeConfig = {
+          Gateway = "192.168.16.118";
+          GatewayOnLink = true;
+          Metric = 90;
+        };
       }
-    ];
-    enp2s0np0.ipv4.addresses = [
       {
-        address = "12.12.12.${ipSuffix}";
-        prefixLength = 24;
+        routeConfig = {
+          Gateway = "2001:da8:bf:300::1";
+          GatewayOnLink = true;
+          Metric = 90;
+        };
       }
     ];
   };
+  systemd.network.networks."10-eth1" = {
+    matchConfig.Name = networkCfg.eth1Name;
+    networkConfig = {
+      DHCP = "yes";
+      IPv6AcceptRA = true;
+    };
+  };
+  systemd.network.networks."10-eth2" = {
+    matchConfig.Name = networkCfg.eth2Name;
+    address = [ "12.12.12.${ipSuffix}/24" ];
+  };
+  networking.interfaces.eno1.wakeOnLan.enable = true;
   networking.extraHosts = ''
     192.168.16.101 g1-nasp g1
     192.168.16.102 g2-nasp g2
@@ -106,7 +125,7 @@ in
   };
   networking.rxe = {
     enable = true;
-    interfaces = [ "enp2s0np0" ];
+    interfaces = [ "${networkCfg.eth2Name}" ];
   };
   ## packages and services
   nixpkgs.config.allowUnfree = true;