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Date:   Mon, 28 Sep 2020 07:39:13 +0200
From:   Vincent Bernat <>
To:     David Ahern <>
Cc:     Baptiste Jonglez <>,
        Alarig Le Lay <>,,, Oliver <>
Subject: Re: IPv6 regression introduced by commit

 ❦ 27 septembre 2020 20:38 -07, David Ahern:

> fib_rt_alloc is incremented by calls to ip6_dst_alloc. Each of your
> 9,999 pings is to a unique address and hence causes a dst to be
> allocated and the counter to be incremented. It is never decremented.
> That is standard operating procedure.

At some point, only PMTU exceptions would create a dst entry.
Program defensively.
            - The Elements of Programming Style (Kernighan & Plauger)

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