title: Setting option SO_SETFIB on boost sockets
body: <p>I do not see any option to set SO_SETFIB on <a href="http://www.boost.org/doc/libs/1_47_0/doc/html/boost_asio/reference/ip__tcp/socket.html" rel="nofollow">boost sockets</a>.  Anyone has any idea or point me in right direction how to achieve that?</p>