Hi, I've a Problem with some TCP Connections on IPv6. The Connection suddenly hangs and after some time there is a "Connection reset by peer". The problem shows up when using rsync. The Kernel Version is 2.4.21-xfs. Here a dump with tethereal on the intersting part of the connection. I've the change the hostnames involved to "foo" and "bar", while "bar" is the local host running 2.4.21-xfs. [ looks like bar has missed 3183058164 ] 20493 107.874144 foo -> bar TCP rsync > 43084 [ACK] Seq=3183092436 Ack=3636551868 Win=0 Len=1408 20494 107.874159 bar -> foo TCP 43084 > rsync [ACK] Seq=3636551868 Ack=3183058164 Win=50688 Len=0[Short Frame] 20495 107.874150 foo -> bar TCP rsync > 43084 [ACK] Seq=3183093844 Ack=3636551868 Win=0 Len=20 20496 107.874167 bar -> foo TCP 43084 > rsync [ACK] Seq=3636551868 Ack=3183058164 Win=50688 Len=0[Short Frame] 20497 107.879092 foo -> bar TCP rsync > 43084 [ACK] Seq=3183093864 Ack=3636551868 Win=0 Len=1408 20498 107.879107 bar -> foo TCP 43084 > rsync [ACK] Seq=3636551868 Ack=3183058164 Win=50688 Len=0[Short Frame] 20499 107.879098 foo -> bar TCP rsync > 43084 [ACK] Seq=3183095272 Ack=3636551868 Win=0 Len=20 20500 107.879115 bar -> foo TCP 43084 > rsync [ACK] Seq=3636551868 Ack=3183058164 Win=50688 Len=0[Short Frame] [ now foo sends 3183058164 ] 20501 108.097485 foo -> bar TCP rsync > 43084 [ACK] Seq=3183058164 Ack=3636551868 Win=0 Len=1408 20502 108.637482 foo -> bar TCP rsync > 43084 [ACK] Seq=3183058164 Ack=3636551868 Win=0 Len=1408 [ but bar still wants it and decrementes the Sequence Number. WTF?] 20503 108.869568 bar -> foo TCP 43084 > rsync [ACK] Seq=3636551867 Ack=3183058164 Win=50688 Len=0[Short Frame] 20504 108.910164 foo -> bar TCP rsync > 43084 [ACK] Seq=3183095292 Ack=3636551868 Win=0 Len=0 20505 109.717520 foo -> bar TCP rsync > 43084 [ACK] Seq=3183058164 Ack=3636551868 Win=0 Len=1408 20506 110.909585 bar -> foo TCP 43084 > rsync [ACK] Seq=3636551867 Ack=3183058164 Win=50688 Len=0[Short Frame] 20507 110.949344 foo -> bar TCP rsync > 43084 [ACK] Seq=3183095292 Ack=3636551868 Win=0 Len=0 20508 111.877766 foo -> bar TCP rsync > 43084 [ACK] Seq=3183058164 Ack=3636551868 Win=0 Len=1408 20509 114.939611 bar -> foo TCP 43084 > rsync [ACK] Seq=3636551867 Ack=3183058164 Win=50688 Len=0[Short Frame] 20510 114.979986 foo -> bar TCP rsync > 43084 [ACK] Seq=3183095292 Ack=3636551868 Win=0 Len=0 20511 116.197930 foo -> bar TCP rsync > 43084 [ACK] Seq=3183058164 Ack=3636551868 Win=0 Len=1408 20512 122.979668 bar -> foo TCP 43084 > rsync [ACK] Seq=3636551867 Ack=3183058164 Win=50688 Len=0[Short Frame] 20513 123.019675 foo -> bar TCP rsync > 43084 [ACK] Seq=3183095292 Ack=3636551868 Win=0 Len=0 20514 124.838756 foo -> bar TCP rsync > 43084 [ACK] Seq=3183058164 Ack=3636551868 Win=0 Len=1408 20515 139.019753 bar -> foo TCP 43084 > rsync [ACK] Seq=3636551867 Ack=3183058164 Win=50688 Len=0[Short Frame] 20516 139.060408 foo -> bar TCP rsync > 43084 [ACK] Seq=3183095292 Ack=3636551868 Win=0 Len=0 20517 142.120094 foo -> bar TCP rsync > 43084 [ACK] Seq=3183058164 Ack=3636551868 Win=0 Len=1408 20518 171.059942 bar -> foo TCP 43084 > rsync [ACK] Seq=3636551867 Ack=3183058164 Win=50688 Len=0[Short Frame] 20519 171.100208 foo -> bar TCP rsync > 43084 [ACK] Seq=3183095292 Ack=3636551868 Win=0 Len=0 20520 176.685794 foo -> bar TCP rsync > 43084 [ACK] Seq=3183058164 Ack=3636551868 Win=0 Len=1408 20521 235.100317 bar -> foo TCP 43084 > rsync [ACK] Seq=3636551867 Ack=3183058164 Win=50688 Len=0[Short Frame] 20522 235.141199 foo -> bar TCP rsync > 43084 [ACK] Seq=3183095292 Ack=3636551868 Win=0 Len=0 20523 245.808749 foo -> bar TCP rsync > 43084 [ACK] Seq=3183058164 Ack=3636551868 Win=0 Len=1408 20524 355.141019 bar -> foo TCP 43084 > rsync [ACK] Seq=3636551867 Ack=3183058164 Win=50688 Len=0[Short Frame] 20525 355.181162 foo -> bar TCP rsync > 43084 [ACK] Seq=3183095292 Ack=3636551868 Win=0 Len=0 20526 365.818884 foo -> bar TCP rsync > 43084 [ACK] Seq=3183058164 Ack=3636551868 Win=0 Len=1408 20527 475.181719 bar -> foo TCP 43084 > rsync [ACK] Seq=3636551867 Ack=3183058164 Win=50688 Len=0[Short Frame] 20528 475.222354 foo -> bar TCP rsync > 43084 [ACK] Seq=3183095292 Ack=3636551868 Win=0 Len=0 20529 485.828516 foo -> bar TCP rsync > 43084 [ACK] Seq=3183058164 Ack=3636551868 Win=0 Len=1408 [ This goes on for some time and then the connection gets aborted ] Please let me know if you need more informations about this connection or the hosts involded or - even better - let me know about a patch or something else, that fixes it. Bye, Christoph - : send the line "unsubscribe linux-net" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
