Multipath TCP support in illumos
Multipath TCP aims to allow a TCP connection to use multiple paths to maximize resource usage and increase redundancy. This is rather useful for mobile clients. However, using this in server to server communication might increase transfer speed. It enables to use multiple 10 GigE interfaces more efficiently for single TCP connection. The reference implementation is done in the Linux Kernel. There is also a FreeBSD implementation.
http://multipath-tcp.org/pmwiki.php/Main/HomePage (Linux implementation)
http://caia.swin.edu.au/urp/newtcp/mptcp/ (FreeBSD implementation)
https://github.com/multipath-tcp/mptcp (Linux implementation's source repository)
http://caia.swin.edu.au/urp/newtcp/mptcp/tools/mptcp_v0.3_10.x.248226.patch (Patch against FreeBSD 10.x 248226)