hosts/ildkule/configuration.nix

@@ -1,4 +1,4 @@
-{ config, pkgs, lib, values, ... }:
+{ config, pkgs, values, ... }:
 {
   imports = [
       # Include the results of the hardware scan.
@@ -19,28 +19,27 @@
   boot.tmp.cleanOnBoot = true;
   zramSwap.enable = true;
 
-  # Openstack Neutron and systemd-networkd are not best friends, use something else:
-  systemd.network.enable = lib.mkForce false;
-  networking = let
-    hostConf = values.hosts.ildkule;
-  in {
-    hostName = "ildkule";
-    tempAddresses = "disabled";
-    useDHCP = lib.mkForce true;
+  networking.hostName = "ildkule"; # Define your hostname.
 
-    search = values.defaultNetworkConfig.domains;
-    nameservers = values.defaultNetworkConfig.dns;
-    defaultGateway.address = hostConf.ipv4_internal_gw;
+  # Main connection, using the global/floatig IP, for communications with the world
+  systemd.network.networks."30-ntnu-global" = values.openstackGlobalNetworkConfig // {
+    matchConfig.Name = "ens4";
 
-    interfaces."ens4" = {
-      ipv4.addresses = [
-        { address = hostConf.ipv4;          prefixLength = 32; }
-        { address = hostConf.ipv4_internal; prefixLength = 24; }
-      ];
-      ipv6.addresses = [
-        { address = hostConf.ipv6;          prefixLength = 64; }
+    # Add the global addresses in addition to the local address learned from DHCP
+    addresses = [
+      { addressConfig.Address = "${values.hosts.ildkule.ipv4_global}/32"; }
+      { addressConfig.Address = "${values.hosts.ildkule.ipv6_global}/128"; }
     ];
   };
+
+  # Secondary connection only for use within the university network
+  systemd.network.networks."40-ntnu-internal" = values.openstackLocalNetworkConfig // {
+    matchConfig.Name = "ens3";
+    # Add the ntnu-internal addresses in addition to the local address learned from DHCP
+    addresses = [
+      { addressConfig.Address = "${values.hosts.ildkule.ipv4}/32"; }
+      { addressConfig.Address = "${values.hosts.ildkule.ipv6}/128"; }
+    ];
   };
 
   # List packages installed in system profile

misc/metrics-exporters.nix

@@ -14,6 +14,8 @@
       "::1"
       values.hosts.ildkule.ipv4
       values.hosts.ildkule.ipv6
+      values.hosts.ildkule.ipv4_global
+      values.hosts.ildkule.ipv6_global
     ];
   };
 

values.nix

@@ -30,10 +30,11 @@ in rec {
       ipv6 = pvv-ipv6 168;
     };
     ildkule = {
-      ipv4 = "129.241.153.213";
-      ipv4_internal = "192.168.12.209";
-      ipv4_internal_gw = "192.168.12.1";
-      ipv6 = "2001:700:300:6026:f816:3eff:fe58:f1e8";
+      ipv4 = "10.212.25.209";
+      ipv6 = "2001:700:300:6025:f816:3eff:feee:812d";
+
+      ipv4_global = "129.241.153.213";
+      ipv6_global = "2001:700:300:6026:f816:3eff:fe58:f1e8";
     };
     bicep = {
       ipv4 = pvv-ipv4 209;
@@ -65,11 +66,32 @@ in rec {
   };
 
   defaultNetworkConfig = {
-    dns = [ "129.241.0.200" "129.241.0.201" "2001:700:300:1900::200" "2001:700:300:1900::201" ];
-    domains = [ "pvv.ntnu.no" "pvv.org" ];
-    gateway = [ hosts.gateway ];
-
     networkConfig.IPv6AcceptRA = "no";
+    gateway = [ hosts.gateway ];
+    dns = [ "129.241.0.200" "129.241.0.201" ];
+    domains = [ "pvv.ntnu.no" "pvv.org" ];
     DHCP = "no";
   };
+
+  openstackGlobalNetworkConfig = {
+    networkConfig.IPv6AcceptRA = "yes";
+    dns = [ "129.241.0.200" "129.241.0.201" ];
+    domains = [ "pvv.ntnu.no" "pvv.org" ];
+    DHCP = "yes";
+  };
+
+  openstackLocalNetworkConfig = {
+    networkConfig.IPv6AcceptRA = "no";
+    dns = [ "129.241.0.200" "129.241.0.201" ];
+    domains = [ "pvv.ntnu.no" "pvv.org" ];
+    DHCP = "yes";
+
+    # Only use this network for link-local networking, not global/default routes
+    dhcpV4Config.UseRoutes = "no";
+    routes = [
+      { routeConfig = { Destination = "10.0.0.0/8"; Gateway = "_dhcp4"; }; }
+    ];
+
+    linkConfig.RequiredForOnline = "no";
+  };
 }