对于一些客户端ip地址不生效的问题，可以重启客户端的flannel配置文件：
#!/bin/bash

# Copyright 2015 The Kubernetes Authors All rights reserved.
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
#     http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.

# reconfigure docker network setting

if [ "$(id -u)" != "0" ]; then
  echo >&2 "Please run as root"
  exit 1
fi

source ~/kube/config-default.sh

attempt=0
while true; do
  /opt/bin/etcdctl get /coreos.com/network/config
  if [[ "$?" == 0 ]]; then
    break
  else
        # enough timeout??
    if (( attempt > 600 )); then
      echo "timeout for waiting network config" > ~/kube/err.log
      exit 2
    fi

    /opt/bin/etcdctl mk /coreos.com/network/config "{\"Network\":\"${FLANNEL_NET}\"}"
    attempt=$((attempt+1))
    sleep 3
  fi
done

#wait some secs for /run/flannel/subnet.env ready
sleep 15
sudo ip link set dev docker0 down
sudo brctl delbr docker0

source /run/flannel/subnet.env

echo DOCKER_OPTS=\"${DOCKER_OPTS} -H tcp://127.0.0.1:4243 -H unix:///var/run/docker.sock \
     --bip=${FLANNEL_SUBNET} --mtu=${FLANNEL_MTU}\" > /etc/default/docker
sudo service docker restart