icmpsocks

socks5 over icmp

埋坑，不知道什么时候有能力做出来.

http://blog.csdn.net/hengyunabc/article/details/24897199

http://blog.brunogarcia.com/2012/03/icmp-for-stealth-transport-of-data.html

http://xiaoxia.org/2012/01/16/cmwap-vpn-over-icmp-tunnel-python-code-2/