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Date:   Mon, 11 Jul 2022 11:29:11 -0700
From:   Jakub Kicinski <>
To:     Matthias May <>
Cc:     <>, <>,
        <>, <>,
        <>, <>
Subject: Re: [PATCH net] ip_tunnel: allow to inherit from VLAN encapsulated
 IP frames

On Sat, 9 Jul 2022 22:09:12 +0200 Matthias May wrote:
> >> 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?  
> Yes inherit does not work either. This is why i started setting it statically.
> However I think I figured out what is going on.
> Setting the TOS statically to 0xa0 does work... when the payload is IPv4 or IPv6,
> which is also when inheriting works. For everything other type of payload, it is always 0x00.
> This is different than with an IPv4 tunnel.
> Should i consider this a bug that needs to be fixed, or is that the intended behaviour?

Yes, most likely a bug if you ask me :S

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