netdev - Re: ip_no_pmtu

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Date:	Tue, 27 Oct 2015 00:08:22 +0100
From:	Hannes Frederic Sowa <hannes@...essinduktion.org>
To:	Vincent Li <vincent.mc.li@...il.com>
Cc:	netdev@...r.kernel.org
Subject: Re: ip_no_pmtu_disc and UDP

On Mon, Oct 26, 2015, at 23:53, Vincent Li wrote:
> ok, I observed  if i increase the UDP client packet size > local
> interface  MTU 1500, the client will fragment the packet first and
> then send it out, if the UDP client packet size < local interface MTU
> 1500, the DF bit will be set when ip_no_pmtu_disc set to 0, is this
> expected behavior ?

Yes, it is.

Bye,
Hannes
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