http://en.wikipedia.org/wiki/Multipath_TCP
http://multipath-tcp.org/data/MultipathTCP-netsys.pdf
http://nrg.cs.ucl.ac.uk/mptcp/implementation.html
http://appleinsider.com/articles/13/09/20/apple-found-to-be-using-advanced-multipath-tcp-networking-in-ios-7
http://lwn.net/Articles/544399/
https://www.usenix.org/conference/nsdi12/technical-sessions/presentation/raiciu