netdev - Re: Possible IPv6 fragmentation/pmtud bug

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: Windows password security audit tool. GUI, reports in PDF.

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

Message-ID: <20131205201856.GC21745@order.stressinduktion.org>
Date:	Thu, 5 Dec 2013 21:18:57 +0100
From:	Hannes Frederic Sowa <hannes@...essinduktion.org>
To:	"Templin, Fred L" <Fred.L.Templin@...ing.com>
Cc:	"netdev@...r.kernel.org" <netdev@...r.kernel.org>
Subject: Re: Possible IPv6 fragmentation/pmtud bug

On Thu, Dec 05, 2013 at 08:13:25PM +0000, Templin, Fred L wrote:
> Another clue that I should have mentioned in my initial message; the
> "hosts", "routers" and "links" are not physical nodes but rather
> network namespace virtual nodes running within a single linux 3.10.17
> emulation server. Could there be some sort of weird "cross-talk"
> between VMs that is making the router believe it is a host?

That is probable. With a quick test I could not reproduce it. I guess we don't
reset skb->local_df after creation. I'll check it out.

Thanks for the report,

  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