I've been trying to test a fix for TCP RTO calculation, with help from Fredrik Pettai. But, our networks are too good and we see 6-7 Mb/s throughput with no drops from Sweden to the US and back. If anyone is willing to run a discard server (in inetd, usually), and crank up recvbuf (or set recvbuf auto), and tell me the IP address or name (and perhaps do this on v6 as well), I'd appreciate it, especially if you have high delays or loss to me. The basic issue is that I need TCP to go into RTO mode. Dropping cwnd by half on a single drop and SACK are working too well. I am running a discard server on fnord.ir.bbn.com (v4 and v6) if people want to try.
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