netdev - Re: IPv6 regression introduced by commit 3b6761d18bc11f2af2a6fc494e9026d39593f22c

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Message-ID: <87wo0e8npa.fsf@debian.org>
Date:   Mon, 28 Sep 2020 07:39:13 +0200
From:   Vincent Bernat <bernat@...ian.org>
To:     David Ahern <dsahern@...il.com>
Cc:     Baptiste Jonglez <baptiste@...sofnetworks.org>,
        Alarig Le Lay <alarig@...rdarmor.fr>, netdev@...r.kernel.org,
        jack@...ilfillan.uk, Oliver <bird-o@...net.de>
Subject: Re: IPv6 regression introduced by commit
 3b6761d18bc11f2af2a6fc494e9026d39593f22c

 ❦ 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)