[Openswan Users] still mtu troubles

Rolf Offermanns roffermanns at sysgo.com
Mon Mar 7 09:22:12 CET 2005

On Sunday 06 March 2005 15:50, jef peeraer wrote:
> i had a roadwarrior ( isdn adsl ), which seemed to freezed once in a while,
> clearly an mtu problem. set the mtu to 1400, and it seemed to work. until
> the users wanted to send attachements with their mails. after a 7 % of
> transmission , the connection seemed to stall. smtp is tcp, so it can't be
> a problem concerning this udp fragmentation. what else could i try  ?
Do you use NAT-T. If you do, then udp is back in the calculation, since the 
esp packets are wrapped in udp again.

Just a thought.

Rolf Offermanns <roffermanns at sysgo.com>
SYSGO AG     Tel.: +49-6136-9948-0
Am Pfaffenstein 14   Fax: +49-6136-9948-10
55270 Klein-Winternheim  http://www.sysgo.com

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