diff --git a/keepalived.nix b/keepalived.nix
index f676a1a..a1bb61a 100644
--- a/keepalived.nix
+++ b/keepalived.nix
@@ -6,6 +6,7 @@
         priority = config.vars.ka_priority;
         interface = lib.head config.vars.interfaces;
         virtualRouterId = 69;
+        useVmac = true;
         virtualIps = [
           {
             addr = config.vars.ka_addr_v4;
@@ -16,6 +17,7 @@
         priority = config.vars.ka_priority;
         interface = lib.head config.vars.interfaces;
         virtualRouterId = 96;
+        useVmac = true;
         virtualIps = [
           {
             addr = config.vars.ka_addr_v6;
@@ -24,4 +26,4 @@
       };
     }; 
   };
-}
\ No newline at end of file
+}