diff --git a/nixos/modules/services/cluster/kubernetes/flannel.nix b/nixos/modules/services/cluster/kubernetes/flannel.nix
index 7bbb55ba0724..cc1cc0b9574a 100644
--- a/nixos/modules/services/cluster/kubernetes/flannel.nix
+++ b/nixos/modules/services/cluster/kubernetes/flannel.nix
@@ -41,6 +41,7 @@ in
           cniVersion = "0.3.1";
           delegate = {
             isDefaultGateway = true;
+            hairpinMode = true;
             bridge = "mynet";
           };
         }