1 files changed, 82 insertions, 0 deletions
diff --git a/nixos/tests/networking/router.nix b/nixos/tests/networking/router.nix
new file mode 100644
index 0000000000000..e0ad7fa01591a
--- /dev/null
+++ b/nixos/tests/networking/router.nix
@@ -0,0 +1,82 @@
+{ networkd }: { config, pkgs, ... }:
+  let
+    inherit (pkgs) lib;
+    qemu-common = import ../../lib/qemu-common.nix { inherit lib pkgs; };
+    vlanIfs = lib.range 1 (lib.length config.virtualisation.vlans);
+  in {
+    environment.systemPackages = [ pkgs.iptables ]; # to debug firewall rules
+    virtualisation.vlans = [ 1 2 3 ];
+    boot.kernel.sysctl."net.ipv6.conf.all.forwarding" = true;
+    networking = {
+      useDHCP = false;
+      useNetworkd = networkd;
+      firewall.checkReversePath = true;
+      firewall.allowedUDPPorts = [ 547 ];
+      interfaces = lib.mkOverride 0 (lib.listToAttrs (lib.forEach vlanIfs (n:
+        lib.nameValuePair "eth${toString n}" {
+          ipv4.addresses = [ { address = "192.168.${toString n}.1"; prefixLength = 24; } ];
+          ipv6.addresses = [ { address = "fd00:1234:5678:${toString n}::1"; prefixLength = 64; } ];
+        })));
+    };
+    services.kea = {
+      dhcp4 = {
+        enable = true;
+        settings = {
+          interfaces-config = {
+            interfaces = map (n: "eth${toString n}") vlanIfs;
+            dhcp-socket-type = "raw";
+            service-sockets-require-all = true;
+            service-sockets-max-retries = 5;
+            service-sockets-retry-wait-time = 2500;
+          };
+          subnet4 = map (n: {
+            id = n;
+            subnet = "192.168.${toString n}.0/24";
+            pools = [{ pool = "192.168.${toString n}.3 - 192.168.${toString n}.254"; }];
+            option-data = [
+              { data = "192.168.${toString n}.1"; name = "routers"; }
+              { data = "192.168.${toString n}.1"; name = "domain-name-servers"; }
+            ];
+
+            reservations = [{
+              hw-address = qemu-common.qemuNicMac n 1;
+              hostname = "client${toString n}";
+              ip-address = "192.168.${toString n}.2";
+            }];
+          }) vlanIfs;
+        };
+      };
+      dhcp6 = {
+        enable = true;
+        settings = {
+          interfaces-config = {
+            interfaces = map (n: "eth${toString n}") vlanIfs;
+            service-sockets-require-all = true;
+            service-sockets-max-retries = 5;
+            service-sockets-retry-wait-time = 2500;
+          };
+
+          subnet6 = map (n: {
+            id = n;
+            subnet = "fd00:1234:5678:${toString n}::/64";
+            interface = "eth${toString n}";
+            pools = [{ pool = "fd00:1234:5678:${toString n}::2-fd00:1234:5678:${toString n}::2"; }];
+          }) vlanIfs;
+        };
+      };
+    };
+    services.radvd = {
+      enable = true;
+      config = lib.flip lib.concatMapStrings vlanIfs (n: ''
+        interface eth${toString n} {
+          AdvSendAdvert on;
+          AdvManagedFlag on;
+          AdvOtherConfigFlag on;
+
+          prefix fd00:1234:5678:${toString n}::/64 {
+            AdvAutonomous off;
+          };
+        };
+      '');
+    };
+  }