Cc'ing netdev On Sun, Mar 6, 2016 at 7:10 AM, Andreas Messer <a...@bastelmap.de> wrote: > Hi there, > > i have updated two of my machines in the last weeks to linux 4.4.1 and linux > 4.4.3. It seems that since then i get unexpected TCPv6 connection resets when > connecting to these machines remotely. The issue occurs with sshd and with a > http service. /etc/hosts.deny and /etc/hosts.allow are empty on both server > machines. I'm not so in IPv6 and have no idea whats going on. Please find > attached a network trace from one of the machines when connecting with ssh (on > port 23 for debugging).
Sounds like the problem fixed by the following commit: commit 9cf7490360bf2c46a16b7525f899e4970c5fc144 Author: Eric Dumazet <eduma...@google.com> Date: Tue Feb 2 19:31:12 2016 -0800 tcp: do not drop syn_recv on all icmp reports Thanks. > > Redirects should be accepted according to settings: > > root@banana:/proc/sys/net/ipv6# cat conf/wlan0/forwarding > 0 > root@banana:/proc/sys/net/ipv6# cat conf/wlan0/accept_redirects > 1 > root@banana:/proc/sys/net/ipv6# uname -a > Linux banana 4.4.1-banana #3 SMP Wed Feb 17 23:03:38 CET 2016 x86_64 GNU/Linux > > Is there some new network settings or features? My network consists of an > ethernet/wlan router where subnet of wlan and ethernet are identical. (forced > by the router, but was never a problem before). The problem occurs when > connecting from ethernet machine to wlan machine and when connecting from wlan > machine to wlan machine. At the moment its not possible to establish a > connection with these machines using IPv6. > > Thanks for help! > > Cheers > Andreas