netdev - Re: pmtu discovery on SA

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]

Date:	Wed, 18 Jul 2007 15:14:42 +0200
From:	Patrick McHardy <kaber@...sh.net>
To:	Beschorner Daniel <Daniel.Beschorner@...ton.com>
CC:	netdev@...r.kernel.org
Subject: Re: pmtu discovery on SA

Beschorner Daniel wrote:
>>>No more crashes with IPComp and smaller PMTUs.
>>>But the "pmtu discovery on SA ESP/..." messages don't disappear.
>>
>>Thats probably a different issue. Please post the output of
>>"ip -x xfrm state" (obfuscate keys if you care ..).
> 
> 
> Linux (MTU 1500) <-> ADSL router (1492) <-> ... <-> Linux (1500)

In a previous mail you mentioned:

> The router on the ADSL line (behind an ADSL Netopia router via Ethernet)
> crashed too with 1500, now it uses 1492.

So its using 1492 now? Otherwise it would be expected since the
initial MTU calculation would be based on 1500.

Please capture a full ICMP packet (with -s0) and send me the
binary dump.
-
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