netdev - Re: [PATCH net] ip_tunnel: allow to inherit from VLAN encapsulated IP frames

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Message-ID: <20220707170145.0666cd4c@kernel.org>
Date:   Thu, 7 Jul 2022 17:01:45 -0700
From:   Jakub Kicinski <kuba@...nel.org>
To:     Matthias May <matthias.may@...termo.com>
Cc:     <netdev@...r.kernel.org>, <davem@...emloft.net>,
        <yoshfuji@...ux-ipv6.org>, <dsahern@...nel.org>,
        <edumazet@...gle.com>, <pabeni@...hat.com>
Subject: Re: [PATCH net] ip_tunnel: allow to inherit from VLAN encapsulated
 IP frames

On Thu, 7 Jul 2022 15:59:10 +0200 Matthias May wrote:
> Has setting the TOS for ip6gretap ever worked?

Not sure, looks like the code is there, but I haven't used it myself.
I presume "0xa0" is not trying to set the ECN bits? I never remember
which end has the ECN bits, those may well get nuked on the way.

> How should i go forward with this?

I think your example above shows that "tos 0xa0" does not work but the
conversation was about inheritance, does "tos inherit" not work either?