[Openswan Users] Incorrect UDP checksum problem

[Jacco de Leeuw]

Juha Pietikäinen wrote:

> My SMC barricade ADSL-router supports only ESP tunnel mode and Windows XPs
> native L2TP/IPsec client is using ESP transport mode with IPsec, which is
> probably causing the problem.

It seems that your router is doing IPsec passthrough but it is not doing
a good job in Transport Mode.

> Are there any good workarounds for solving the problem?

Can you disable IPsec passthrough on the router? If not, perhaps there is
an undocumented setting (command line?) or new firmware available?

Jacco
-- 
Jacco de Leeuw                         mailto:jacco2 at dds.nl
Zaandam, The Netherlands           http://www.jacco2.dds.nl