It's done in two steps

 - On checkpoint we find which icons are present
   over all sockets and setup peer number to
   appropriate listening socket

 - On restore we collect listening sockets and once
   we find in-flight connection we search for appropriate
   listening socket name and use it to call connect() then
Signed-off-by: Cyrill Gorcunov <gorcunov@openvz.org>
Acked-by: Pavel Emelyanov <xemul@parallels.com>