Re: [PATCH 0/2] ip/ip6_gre: Fix GRE tunnels not generating IPv6 link local addresses

From: Chris Packham
Date: Mon Dec 19 2022 - 21:25:47 EST


Hi Thomas,

On 19/12/22 14:06, Thomas Winter wrote:
> For our point-to-point GRE tunnels, they have IN6_ADDR_GEN_MODE_NONE
> when they are created then we set IN6_ADDR_GEN_MODE_EUI64 when they
> come up to generate the IPv6 link local address for the interface.
> Recently we found that they were no longer generating IPv6 addresses.
>
> Also, non-point-to-point tunnels were not generating any IPv6 link
> local address and instead generating an IPv6 compat address,
> breaking IPv6 communication on the tunnel.
>
> These failures were caused by commit e5dd729460ca and this patch set
> aims to resolve these issues.

This appears to be a v2 of
https://lore.kernel.org/all/20221218215718.1491444-1-Thomas.Winter@xxxxxxxxxxxxxxxxxxx/#t
but you haven't said so in the subject nor have you included a changelog
in the patches or in the cover letter.

Also for networking patches you should include either "net" or
"net-next" in the subject prefix. As this appears to be a bugfix "net"
is appropriate.

>
> Thomas Winter (2):
> ip/ip6_gre: Fix changing addr gen mode not generating IPv6 link local
> address
> ip/ip6_gre: Fix non-point-to-point tunnel not generating IPv6 link
> local address
>
> net/ipv6/addrconf.c | 57 ++++++++++++++++++++++++---------------------
> 1 file changed, 31 insertions(+), 26 deletions(-)
>