"foodog" wrote: > Bob, personally I don't mind the occasional semi-black box... I'd like a > little bit of #1 followed up with some realworld application via #3. > > My immediate interest is understanding what would be required to get a > vtun VPN up and running between home and work, FWIW. :-) Actually, the distributed cooperative lab I referred to is based on the use of (as-yet unencrypted) GRE tunnels between both Cisco and Linux devices for exchaning BGP routes. The tunnels are more of an iproute issue, but we can include some notes. - Bob