netdev - Re: [Patch net v3 2/2] selftests: add a test case for rp

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Date:   Sun, 14 Nov 2021 21:08:41 -0800
From:   Cong Wang <xiyou.wangcong@...il.com>
To:     Hangbin Liu <liuhangbin@...il.com>
Cc:     Linux Kernel Network Developers <netdev@...r.kernel.org>,
        David Ahern <dsahern@...il.com>
Subject: Re: [Patch net v3 2/2] selftests: add a test case for rp_filter

On Wed, Nov 10, 2021 at 1:18 AM Hangbin Liu <liuhangbin@...il.com> wrote:
>
> On Wed, Jul 17, 2019 at 02:41:59PM -0700, Cong Wang wrote:
> > Add a test case to simulate the loopback packet case fixed
> > in the previous patch.
> >
> > This test gets passed after the fix:
> >
> > IPv4 rp_filter tests
> >     TEST: rp_filter passes local packets                                [ OK ]
> >     TEST: rp_filter passes loopback packets                             [ OK ]
>
> Hi Wang Cong,
>
> Have you tried this test recently? I got this test failed for a long time.
> Do you have any idea?
>
> IPv4 rp_filter tests
>     TEST: rp_filter passes local packets                                [FAIL]
>     TEST: rp_filter passes loopback packets                             [FAIL]

Hm, I think another one also reported this before, IIRC, it is
related to ping version or cmd option. Please look into this if
you can, otherwise I will see if I can reproduce this on my side.

Thanks.