[Openswan Users] VPN stops working after a week

[Paul Wouters]

On Tue, 27 Feb 2007, bas at brijn.nu wrote:

> Subject: [Openswan Users] VPN stops working after a week

> This seems to be a icm error: 3, code 4. That would be
> (http://www.iana.org/assignments/icmp-parameters):
> 	3     Destination Unreachable
> 		4  Fragmentation Needed and Don't Fragment was Set

> My large ping test is not a good test it seems? Ahy idea whu this
> problems only triggers after about a week, and why it's then for ALL
> packets and not just large ones.

I would say that routing between the two endpoints changed. Eg your ISP
went from peering to transit, or some transit provider was unavailable
or something.

> Any suggestions on what to try?

TCP clamping. eg: http://lists.openswan.org/pipermail/users/2006-November/011164.html

Paul
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