diff --git a/cluster/vagrant/util.sh b/cluster/vagrant/util.sh
index 3ab5a522f2e..94ae82b2afa 100755
--- a/cluster/vagrant/util.sh
+++ b/cluster/vagrant/util.sh
@@ -153,6 +153,7 @@ function echo-kube-env() {
   echo "MASTER_IP='${MASTER_IP}'"
   echo "NODE_NAMES=(${NODE_NAMES[@]})"
   echo "NODE_IPS=(${NODE_IPS[@]})"
+  echo "DEFAULT_NETWORK_IF_NAME=${DEFAULT_NETWORK_IF_NAME}"
   echo "CONTAINER_SUBNET='${CONTAINER_SUBNET}'"
   echo "CLUSTER_IP_RANGE='${CLUSTER_IP_RANGE}'"
   echo "MASTER_CONTAINER_SUBNET='${MASTER_CONTAINER_SUBNET}'"