This solution is only partially effective because Comcast's
Sandvine deployment sends a farced RST packet to both sides of the
connection. The solution linked below drops the RST packet on your
firewall keeping the connection from being torn down as far as your client is
concerned, but it is not very likely that the other end will have this as
well.
This is not to say it can't help. Using HTTPS on the
tracker and data encryption also help. So does any kind of tunneling
including tor or DNS/icmp tunneling, but these have some level
of performance impact that may be undesirable.
-Scott
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