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Date:   Mon, 5 Mar 2018 00:12:45 +0100
From:   Stefano Brivio <>
To:     David Ahern <>
Cc:     "David S . Miller" <>,
        Wei Wang <>,
        Hideaki YOSHIFUJI <>,
        Maciej Żenczykowski 
Subject: Re: [PATCH net] ipv6: Reflect MTU changes on PMTU of exceptions for
 MTU-less routes

On Sat, 3 Mar 2018 12:22:36 +0100
Stefano Brivio <> wrote:

> > And please codify the above expectation as a test under
> > tools/testing/selftests/net  
> And this, along with v2.

On a second thought: I start thinking it doesn't make much sense,
especially given the current context of self-tests, to explicitly test
this, because it's a rather particular corner case.

I think it would make more sense to introduce generic tests first.
About, say, PMTU, or route exceptions, but not "tunnel causes route
exception and administrative change doesn't affect PMTU".


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