diff --git a/ops/nixos/blade-tuvok/default.nix b/ops/nixos/blade-tuvok/default.nix
index 2033c84918..6f413dbc23 100644
--- a/ops/nixos/blade-tuvok/default.nix
+++ b/ops/nixos/blade-tuvok/default.nix
@@ -47,7 +47,8 @@ in {
   my.blade.macAddress = {
     internal = "e4:11:5b:ac:e3:fe";
     storage = "e4:11:5b:ac:e4:02";
-    internet = "e4:11:5b:ac:e4:00";
+    internet = "e4:11:5b:ac:e3:ff";
+    public = "e4:11:5b:ac:e4:00";
   };
 
   services.ceph = {
diff --git a/ops/nixos/lib/blade.nix b/ops/nixos/lib/blade.nix
index 2f55fbfe90..9f6525de97 100644
--- a/ops/nixos/lib/blade.nix
+++ b/ops/nixos/lib/blade.nix
@@ -24,6 +24,11 @@ in {
       type = lib.types.nullOr lib.types.str;
       default = null;
     };
+    macAddress.public = lib.mkOption {
+      # If not using a VLAN.
+      type = lib.types.nullOr lib.types.str;
+      default = null;
+    };
   };
 
   config = {
@@ -90,12 +95,15 @@ in {
         br = interfaces: { interfaces = lib.mkDefault interfaces; rstp = false; };
       in {
         br-mgmt = br [ "en-int" ];
-        br-public = br [ "vl-int-public" ];
-      };
-      vlans.vl-int-public = {
-        id = 100;
-        interface = "en-int";
+        br-public = br [ (if config.my.blade.macAddress.public == null then "vl-int-public" else "en-public") ];
       };
+      vlans = ({} //
+        (if config.my.blade.macAddress.public == null then {
+          vl-int-public = {
+            id = 100;
+            interface = "en-int";
+          };
+        } else {}));
 
       interfaces.br-mgmt.ipv4.addresses = lib.mkBefore [{
         address = "10.100.0.${toString (100 + config.my.blade.bay)}";
@@ -132,6 +140,8 @@ in {
       ATTR{address}=="${config.my.blade.macAddress.storage}", NAME="en-storage"
     '') + (lib.optionalString (config.my.blade.macAddress.internet != null) ''
       ATTR{address}=="${config.my.blade.macAddress.internet}", NAME="en-internet"
+    '') + (lib.optionalString (config.my.blade.macAddress.public != null) ''
+      ATTR{address}=="${config.my.blade.macAddress.public}", NAME="en-public"
     '');
 
     virtualisation.podman.enable = true;