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).
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
ipv6_rst_after_redirect.pcapng
Description: application/pcapng
