netdev - Re: UDP packets arriving on wrong sockets

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Date:   Fri, 3 Aug 2018 10:20:06 -0400
From:   Willem de Bruijn <willemdebruijn.kernel@...il.com>
To:     shum@...ndrew.org
Cc:     Network Development <netdev@...r.kernel.org>
Subject: Re: UDP packets arriving on wrong sockets

On Fri, Aug 3, 2018 at 12:20 AM Andrew Cann <shum@...ndrew.org> wrote:
>
> On Thu, Aug 02, 2018 at 11:21:41AM -0400, Willem de Bruijn wrote:
> > You have two sockets bound to the same address and port? Is this using
> > SO_REUSEPORT?
>
> Yes, this is using SO_REUSEPORT.

Then this is working as intended.

Without SO_REUSEPORT it would not be possible to bind two sockets to
the same address and port. See documentation, e.g., at
https://lwn.net/Articles/542629/