We have tested the kernel 3.19-rc7 and found some improvements. Communication does not stop and the file can be finally downloaded, but it still takes a long time.
We have tested a 100 MB file in an Ubuntu server with kernel 3.19-rc7 across the Cisco firewall changing sequence numbers with following results: - With TCP SACK disabled (sysctl -w net.ipv4.tcp_sack=0) 62 seconds - With TCP SACK enabled (default configuration) 462 seconds It seems that, even though the communication is not completely stalled with this kernel version, the problem is not solved yet. ** Tags added: kernel-bug-exists-upstream -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1388786 Title: TCP stale transfer with erroneous SACK information To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1388786/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
