I've enabled tcp, tcpwin and tcprxmt logs, but there isn't anything very interesting.
tcpincoming s 127.0.0.1!53150/127.0.0.1!53150 d 127.0.0.1!17034/127.0.0.1!17034 v 4/4 Also, the issue is definitely related to the loopback. There is no problem when using an address on /dev/ether0. cpu% cat /net/tcp/3/local 192.168.0.100!43125 cpu% cat /net/tcp/3/remote 192.168.0.100!17034 cpu% cat /net/tcp/3/status Established qin 0 qout 0 rq 0.0 srtt 0 mdev 0 sst 1048560 cwin 396560 swin 1048560>>4 rwin 1048560>>4 qscale 4 timer.start 10 timer.count 10 rerecv 0 katimer.start 2400 katimer.count 2106 -- David du Colombier
