net service throw when connection is closed. Modem catches it and hang
up.
netservice: call custom service start() and stop() like others.
ice: init http client before using it
capcom: send stop message when one end is closed. detect hanged resync
and retry them.
capcom: support sf3 M.F 2000 v1 and v2
modem: implement V42 answerer mode
modem: add callbacks for dial out, answer mode, start handshake, etc.
network: detect capcom direct games and simulate the peer-to-peer connection
Stop network service when bba is reset. Start it on first frame out.
dcnet: close connection on dhcp release
picoppp: close all sockets and acceptors when stopping.
Flyinghead