Might be for NAT traversal, ala something like: http://en.wikipedia.org/wiki/UDP_hole_punching http://en.wikipedia.org/wiki/UDP_hole_punching One of the wiki

Might be for NAT traversal, ala something like: http://en.wikipedia.org/wiki/UDP_hole_punching http://en.wikipedia.org/wiki/UDP_hole_punching One of the wiki pages (https://github.com/quartzjer/TeleHash/wiki/My-Understanding-of-the-TeleHash-Protocol https://github.com/quartzjer/TeleHash/wiki/My-Understanding-...) specifically talks about working with NAT: "Packets can continue to pass through NAT network devices like home routers"