netdev - Re: ip_no_pmtu

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite for Android: free password hash cracker in your pocket

[<prev] [next>] [<thread-prev] [day] [month] [year] [list]

Message-Id: <1445900902.1799544.420940873.09BD42C3@webmail.messagingengine.com>
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
--
To unsubscribe from this list: send the line "unsubscribe netdev" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html