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Date:   Fri, 24 Jun 2022 16:51:41 +0300
From:   Aleksey Shumnik <>
To:     Jakub Kicinski <>,,,
Subject: Re: [PATCH] net/ipv4/ip_gre.c net/ipv6/ip6_gre.c: ip and gre header
 are recorded twice

On Fri, Jun 24, 2022 at 6:26 AM Jakub Kicinski <> wrote:
> > > What socket type is the ping you have using?
> >
> > I use SOCK_DGRAM
> Strange.

Why is it strange?

> > I want to find out, the creation of gre and ip header twice, is it a
> > feature or a bug?
> I can't think why that'd be a feature. Could add this case to selftests
> to show how to repro and catch regressions?

I don't really know how to do it, but I'll try
If we just talk about selftests/net, then everything has passed

> > I did everything according to the instructions, hope everything is
> > correct this time.
> Nope, still mangled.

Strangely, everything works fine for me

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