netdev - linux 3.13: problems with isatap tunnel device and UFO

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-next>] [day] [month] [year] [list]

Date:	Fri, 07 Feb 2014 18:47:07 +0100
From:	Wolfgang Walter <linux@...m.de>
To:	netdev@...r.kernel.org
Cc:	Hannes Frederic Sowa <hannes@...essinduktion.org>
Subject: linux 3.13: problems with isatap tunnel device and UFO

Hello,

with kernel 3.13 I have a problem with isatap tunnels receiving fragmented 
ipv6 udp packets.

If I switch of ufo for the tunnel device the problem disappears:
	ethtool -K is0 ufo off

When UFO is on tcpdump shows the packets on the physical device but not on the 
tunnel device. The packets seem to be discarded.

With UFO off I can see them on is0 (and the packet is delivered to the 
socket).

Regards,
-- 
Wolfgang Walter
Studentenwerk München
Anstalt des öffentlichen Rechts
--
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