diff --git a/system/hosts/sail.nix b/system/hosts/sail.nix
index f126c12..5fefd6d 100644
--- a/system/hosts/sail.nix
+++ b/system/hosts/sail.nix
@@ -80,11 +80,20 @@ in
 
     interfaces = {
       enp1s0.ipv6.addresses = secret.networking.interfaces.enp1s0.ipv6.addresses;
+
+      enp7s0.ipv4 = {
+        addresses = [{ address = "10.99.99.2"; prefixLength = 32; }];
+
+        routes = [
+          { address = "10.99.99.0"; prefixLength = 24; via = "10.99.99.1"; }
+          { address = "10.99.99.1"; prefixLength = 32; }
+        ];
+      };
     };
 
     defaultGateway6 = { address = "fe80::1"; interface = "enp1s0"; };
 
-    dhcpcd.denyInterfaces = [ "veth*" ];
+    dhcpcd.denyInterfaces = [ "enp7s0" "veth*" ];
 
     timeServers = [
       "ntp1.hetzner.de"