Hi Ralf, On Mon, Mar 11, 2019 at 10:43:48PM +0100, Ralf Jung wrote: > Package: src:linux > Version: 4.19.16-1 > Severity: normal > > Dear Maintainer, > > since a recent update, IPv6 communication between two of my VMs stopped > working. > You can see some of the debugging effort at > <https://bugzilla.redhat.com/show_bug.cgi?id=1680681>. It turned out that > setting IPv6_rpfilter=no in /etc/firewalld/firewalld.conf fixes the > problem---so > the ip6tables reverse path filtering is incorrectly dropping packets here. > > A self-compiled upstream 4.20.14 kernel does not show this problem, but the > latest kernel in testing still does.
have you tried to isolate the fixing commit for this issue? Regards, Salvatore