[Openswan Users] OpenSWAN (CentOS) <--> Cisco IOS 2600

[Adam Tauno Williams]

I have an CentOS5 host (2.6.18-92.1.22.el5 32bit /
openswan-2.6.14-1.el5_2.1) I'm trying to pair with a Cisco 2600
(C2600-IK9O3S3-M, 12.3(19)-fc2).  The OpenSWAN side I think is OK,  but
I'm a bit hazy on what exactly the IOS side should look like;  I've
found allot of information about OpenSWAN+PIX, but not so much about
OpenSWAN+IOS.

Does anyone have an example/skelton IOS configuration they can share?
I'm currently just using a pre-shared key.