Re: [PATCH] net/ipv4/ip_gre.c net/ipv6/ip6_gre.c: ip and gre header are recorded twice
From: Jakub Kicinski <kuba@kernel.org>
Date: 2022-07-02 01:42:30
On Fri, 1 Jul 2022 18:31:51 -0700 Jakub Kicinski wrote:
On Tue, 28 Jun 2022 18:18:27 +0300 Aleksey Shumnik wrote:quoted
pre-up ip tunnel add mgre0 mode ip6gre local 4444::1111 key 1 ttl 64 tos inheritI can't get GRE6 tunnels to work as NBMA net at all. AFAICT ip6gre_tunnel_xmit() takes the endpoint addresses straight from the netdev, only ip6tnl seems to be doing a lookup. Am I doing it wrong?
If it's just v4 could perhaps be commit fdafed459998 ("ip_gre: set
dev->hard_header_len and dev->needed_headroom properly"). Would you
be able to try some kernel older than 5.8?