diff --git a/nixos/modules/services/cluster/kubernetes/flannel.nix b/nixos/modules/services/cluster/kubernetes/flannel.nix
index 55c737a5cf1..6f97febf5ba 100644
--- a/nixos/modules/services/cluster/kubernetes/flannel.nix
+++ b/nixos/modules/services/cluster/kubernetes/flannel.nix
@@ -66,7 +66,10 @@ in
       };
     };
 
-    systemd.services.docker.serviceConfig.EnvironmentFile = "/run/flannel/docker";
+    systemd.services.docker = {
+      environment.DOCKER_OPTS = "-b none";
+      serviceConfig.EnvironmentFile = "/run/flannel/docker";
+    };
 
     # read environment variables generated by mk-docker-opts
     virtualisation.docker.extraOptions = "$DOCKER_OPTS";