diff --git a/modules/cluster-network.nix b/modules/cluster-network.nix
index 7708d4f3..da1e21a0 100644
--- a/modules/cluster-network.nix
+++ b/modules/cluster-network.nix
@@ -93,6 +93,7 @@ in
             LLDP = true;
             EmitLLDP = true;
             DHCP = "no";
+            IPv6AcceptRA = "no";
           } // (lib.optionalAttrs (! zwNets.${net}.hosts4 ? ${hostName})) {
             # Disable all automatic addressing on bridges. It will delay
             # networkd going into operational state.