The bug requires transferring over 2GB of data without reading from the socket, so it's unlikely; also, a hang is the opposite of being hard on the network. ;)

The bug requires transferring over 2GB of data without reading from the socket, so it's unlikely; also, a hang is the opposite of being hard on the network. ;) However the uncommon characteristics of rsync traffic is probably why some congestion control algorithms may not deal well with rsync.