diff --git a/lib/default.nix b/lib/default.nix
index a507c1f4..9a46c115 100644
--- a/lib/default.nix
+++ b/lib/default.nix
@@ -168,6 +168,16 @@ in {
 
     in if cfg.mapHqHosts then hqLocalHosts else { };
 
+    systemd.network.networks =
+      if cfg.hq.interface != null && config.networking.useNetworkd
+      then {
+        "40-eth0".routes = [ {
+          routeConfig = {
+            Gateway = "172.22.99.4";
+            GatewayOnLink = true;
+          };
+        } ];
+      } else {};
     networking.interfaces =
       /* (if cfg.hq.externalInterface == null then
            { }