Le mercredi 11 février 2026 à 08:39 +0100, Salvatore Bonaccorso a écrit : > Hi Bastien, Tobias, Manuel, > > On Wed, Feb 11, 2026 at 06:29:56AM +0100, Greg KH wrote: > > On Wed, Feb 11, 2026 at 05:04:04AM +0000, Tj wrote: > > > ip6gre tunnels fail to be decapsulated in v6.12.67 so never > > > appears on > > > the GRE interface. > > > > > > Reverting the following commit fixes it: > > > > > > commit df5ffde9669314500809bc498ae73d6d3d9519ac > > > Author: Eric Dumazet <[email protected]> > > > Date: Wed Jan 7 16:31:09 2026 +0000 > > > > > > ip6_tunnel: use skb_vlan_inet_prepare() in __ip6_tnl_rcv() > > > > > > [ Upstream commit 81c734dae203757fb3c9eee6f9896386940776bd ] > > > > > > v6.19 works but I've not been able to identify a subsequent > > > commit that > > > should also be backported to the stable tree. > > > > Please see this thread: > > > > https://lore.kernel.org/r/CANn89iL5ksZZCJr7SK9=4Sw6EejdOzr5_m6pBMM > > [email protected] > > > > I think that should fix this, right? > > Can you test building v6.12.69 (or the Debian kernel, see > instructions > below) with the attached patch which would be the above mentioned > fix, > and report back here? > > Manuel, you mentioned you see the problem as well on 6.1.162 (where > ineed the patches were backported as well), can you double-check as > well that the patch fixes your seen regression? > > To build the Debian kernel with a single-patch on top applied follow > https://kernel-team.pages.debian.net/kernel-handbook/ch-common-tasks.html#id-1.6.6.4
Hello. I built a new kernel following these instructions, and it fixes the problem: root@gre-test:~# uname -a Linux gre-test 6.12+unreleased-amd64 #1 SMP PREEMPT_DYNAMIC Debian 6.12.69-1a~test (2026-02-11) x86_64 GNU/Linux root@gre-test:~# ping fd3c:aa96:f408:700::1 PING fd3c:aa96:f408:700::1 (fd3c:aa96:f408:700::1) 56 data bytes 64 bytes from fd3c:aa96:f408:700::1: icmp_seq=1 ttl=64 time=2.55 ms 64 bytes from fd3c:aa96:f408:700::1: icmp_seq=2 ttl=64 time=2.42 ms 64 bytes from fd3c:aa96:f408:700::1: icmp_seq=3 ttl=64 time=2.36 ms ^C --- fd3c:aa96:f408:700::1 ping statistics --- 3 packets transmitted, 3 received, 0% packet loss, time 2003ms rtt min/avg/max/mdev = 2.362/2.444/2.551/0.079 ms Best regards, -- Bastien
