Merge pull request #18456 from thockin/bump-flannel-ver

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cluster/ubuntu/util.sh

@@ -256,6 +256,7 @@ EOF
 function create-flanneld-opts() {
   cat <<EOF > ~/kube/default/flanneld
 FLANNEL_OPTS="--etcd-endpoints=http://${1}:4001 \
+ --ip-masq \
  --iface=${2}"
 EOF
 }