Add Open vSwitch-based multitenant backend for use with OpenShift / Kubernetes: https://github.com/coreos/flannel/pull/384
flannel 通信原理图: https://raw.githubusercontent.com/coreos/flannel/master/packet-01.png
http://cdn2.infoqstatic.com/statics_s1_20161214-0550/resource/articles/docker-network-and-pipework-open-source-explanation-practice/zh/resources/1419560200174.png
Pipework、Weave、Flannel各自的优势和区别: http://dockone.io/question/259
Kubernets,Flannel,Docker网络性能深度测试: http://www.tuicool.com/articles/JNNFz2f
Docker网络详解及pipework源码解读与实践:
尴尬的VXLAN: http://www.c114.net/news/211/a876004.html
【华为悦读汇】技术发烧友：认识VXLAN: http://support.huawei.com/huaweiconnect/enterprise/thread-334207.html
隧道和网络虚拟化:NVGRE vs VXLAN: http://www.sdnlab.com/11819.html
VXLAN学习整理: http://www.aboutyun.com/thread-11189-1-1.html
基于多租户的云计算Overlay网络: http://www.h3c.com.cn/About_H3C/Company_Publication/IP_Lh/2013/04/Home/Catalog/201309/796466_30008_0.htm
Vxlan基础理解:
云数据中心VXLAN技术应用详解: http://cloud.51cto.com/art/201507/483475.htm
overlay网络技术之VxLAN详解:
VXLAN 概念（Part I） - 每天5分钟玩转 OpenStack（108）:
FLANNEL源码分析（一） 概述
go程序包源码解读——golang.org/x/net/context:
Go语言并发模型：像Unix Pipe那样使用channel:
