diff --git a/flake.lock b/flake.lock
index dba4755..b962433 100644
--- a/flake.lock
+++ b/flake.lock
@@ -978,11 +978,11 @@
         "treefmt-nix": "treefmt-nix_3"
       },
       "locked": {
-        "lastModified": 1724916929,
-        "narHash": "sha256-QM8qdmnENvNGvfhLv0LsQsZgIot75Q7R8QV0Mm5I5yM=",
+        "lastModified": 1725014015,
+        "narHash": "sha256-MFumiomiSQopOPcQgaBsqIRQZ8q2BJiEOm7bGomuu1U=",
         "ref": "main",
-        "rev": "82083225da7402d2bde9cfd3172374a96429b579",
-        "revCount": 72,
+        "rev": "8a828064a794b75eb2459c6be499bef740c32721",
+        "revCount": 74,
         "type": "git",
         "url": "ssh://forgejo@git.ingolf-wagner.de/palo/nixos-private-parts.git"
       },
diff --git a/flake.nix b/flake.nix
index a52c21e..c0344ee 100644
--- a/flake.nix
+++ b/flake.nix
@@ -342,7 +342,7 @@
           clan-core.flakeModules.default
           ./nix/formatter.nix
           ./nix/packages
-          ./nix/topology.nix
+          ./nix/topology
         ];
 
         # Define your clan
diff --git a/machines/cherry/configuration.nix b/machines/cherry/configuration.nix
index 8ab0631..f800a9c 100644
--- a/machines/cherry/configuration.nix
+++ b/machines/cherry/configuration.nix
@@ -18,6 +18,7 @@
     ./network-wireguard-wg1.nix
 
     ./37c3.nix
+    ./topology.nix
 
   ];
 
diff --git a/machines/cherry/topology.nix b/machines/cherry/topology.nix
new file mode 100644
index 0000000..59218f3
--- /dev/null
+++ b/machines/cherry/topology.nix
@@ -0,0 +1,22 @@
+{ config, ... }:
+with config.lib.topology;
+{
+  topology.self = {
+
+    interfaces.wg0 = {
+      network = "wg0";
+      type = "ethernet";
+      virtual = true;
+    };
+    interfaces.ztbn67ogn2 = {
+      network = "wg0";
+      type = "ethernet";
+      virtual = true;
+    };
+    interfaces."tinc.private" = {
+      network = "tinc.private";
+      type = "ethernet";
+      virtual = true;
+    };
+  };
+}
diff --git a/machines/chungus/configuration.nix b/machines/chungus/configuration.nix
index f82d867..9fe7064 100644
--- a/machines/chungus/configuration.nix
+++ b/machines/chungus/configuration.nix
@@ -52,6 +52,8 @@
 
     ./zerotier-controller.nix
 
+    ./topology.nix
+
   ];
 
   components.gui.enable = false;
diff --git a/machines/chungus/topology.nix b/machines/chungus/topology.nix
new file mode 100644
index 0000000..8bda2bb
--- /dev/null
+++ b/machines/chungus/topology.nix
@@ -0,0 +1,33 @@
+{ config, ... }:
+with config.lib.topology;
+{
+  topology.self = {
+
+    interfaces.enp0s31f6 = {
+      network = "home";
+      type = "ethernet";
+    };
+    interfaces.wg0 = {
+      addresses = [ "10.100.0.2" ];
+      network = "wg0";
+      type = "ethernet";
+      virtual = true;
+    };
+    interfaces.ztbn67ogn2 = {
+      network = "wg0";
+      type = "ethernet";
+      virtual = true;
+    };
+    interfaces."tinc.private" = {
+      network = "tinc.private";
+      type = "ethernet";
+      virtual = true;
+    };
+    interfaces."tinc.retiolum" = {
+      network = "tinc.retiolum";
+      type = "ethernet";
+      virtual = true;
+    };
+
+  };
+}
diff --git a/machines/orbi/configuration.nix b/machines/orbi/configuration.nix
index ae920c1..f6bb6ec 100644
--- a/machines/orbi/configuration.nix
+++ b/machines/orbi/configuration.nix
@@ -41,6 +41,8 @@
     #./social-jitsi.nix
     ./social-matrix-terranix.nix
 
+    ./topology.nix
+
   ];
 
   services.logrotate.checkConfig = false; # because uid 3000 does not exist in here
diff --git a/machines/orbi/topology.nix b/machines/orbi/topology.nix
new file mode 100644
index 0000000..24e8306
--- /dev/null
+++ b/machines/orbi/topology.nix
@@ -0,0 +1,28 @@
+{ config, ... }:
+with config.lib.topology;
+{
+  topology.self = {
+
+    #    interfaces.enp0s31f6 = {
+    #      network = "home"; # internet
+    #      type = "ethernet";
+    #    };
+    interfaces.wg0 = {
+      addresses = [ "10.100.0.1" ];
+      network = "wg0";
+      type = "ethernet";
+      virtual = true;
+    };
+    interfaces.ztbn67ogn2 = {
+      network = "wg0";
+      type = "ethernet";
+      virtual = true;
+    };
+    interfaces."tinc.private" = {
+      network = "tinc.private";
+      type = "ethernet";
+      virtual = true;
+    };
+
+  };
+}
diff --git a/nix/topology.nix b/nix/topology/default.nix
similarity index 97%
rename from nix/topology.nix
rename to nix/topology/default.nix
index fa2eba3..d72a838 100644
--- a/nix/topology.nix
+++ b/nix/topology/default.nix
@@ -31,6 +31,7 @@
         overlays = [ inputs.nix-topology.overlays.default ];
       };
       topology.modules = [
+        ./networks.nix
         {
           # Inline module to inform topology of your existing NixOS hosts.
         }
diff --git a/nix/topology/networks.nix b/nix/topology/networks.nix
new file mode 100644
index 0000000..e7a3eb4
--- /dev/null
+++ b/nix/topology/networks.nix
@@ -0,0 +1,20 @@
+{ config, ... }:
+with config.lib.topology;
+{
+
+  networks.wg0 = {
+    name = "wg0";
+    cidrv4 = "10.100.0.0/24";
+  };
+
+  networks."tinc.private" = {
+    name = "tinc private";
+    cidrv4 = "10.23.42.0/24";
+  };
+
+  networks."tinc.retiolum" = {
+    name = "tinc retiolum";
+    #cidrv4 = "192.168.0.0/24";
+  };
+
+}