I've got a 12.04 ltsp-pnp 2 nic setup using the info on:
https://help.ubuntu.com/community/UbuntuLTSP/ltsp-pnp
and: https://help.ubuntu.com/community/UbuntuLTSP/StaticIP
deciding to set up the static ip with network manager.
Of course I don't have internet on the clients. I understand I need to do
This script disables flow control for all NICs and enables NAT in the
192.168.67.x subnet. Both things are good for LTSP.
Drop it to /etc/network/if-up.d/sch-scripts and `chmod +x` it.
And configure your internal NIC to 192.168.67.1.
http://bazaar.launchpad.net/~ts.sch.gr/sch-scripts/trunk/view/