router, pre-router: move DHCP server

hosts/pre-router/configuration.nix

@@ -5,7 +5,6 @@
     [ # Include the results of the hardware scan.
       ./hardware-configuration.nix
       ./router.nix
-      ./dhcp.nix
       ./dns.nix
       ./ipv6.nix
       ./nginx.nix

hosts/pre-router/dhcp.nix

@@ -1,42 +0,0 @@
-{ config, pkgs, ...}:
-
-{
-  services.kea.dhcp4 = {
-    enable = true;
-    settings = {
-      interfaces-config = {
-        interfaces = [ "ens19"];
-      };
-      lease-database = {
-        name = "/var/lib/kea/dhcp4.leases";
-        persist = true;
-        type = "memfile";
-      };
-      subnet4 = [
-        # Heimnetz
-        {
-          subnet = "10.42.10.1/24";
-          pools = [
-            {
-              pool = "10.42.10.50 - 10.42.10.240";
-            }
-          ];
-          option-data = [
-            {
-              name = "routers";
-              data = "10.42.10.1";
-            }
-            {
-              name = "domain-name-servers";
-              data = "10.42.10.8";
-            }
-            {
-              name = "domain-name";
-              data = "bula22.de";
-            }
-          ];
-        }
-      ];
-    };
-  };
-}

hosts/router/10-net-services.nix

@@ -27,6 +27,31 @@
     };
   '';
 
+  services.kea.dhcp4 = {
+    settings = {
+      interfaces-config = {
+        interfaces = [ "net-services" ];
+      };
+      subnet4 = [
+        {
+          id = 10;
+          subnet = "10.42.10.1/24";
+          pools = [
+            {
+              pool = "10.42.10.100 - 10.42.10.240";
+            }
+          ];
+          option-data = [
+            {
+              name = "routers";
+              data = "10.42.10.1";
+            }
+          ];
+        }
+      ];
+    };
+  };
+
   # Everyone is allowed reaching this, no firewall therefore
 
   clerie.uplink-selector.interfaces.net-services.uplink = "uplink-a";