As you can see I added 6.5 to remind me to decrypt other drives. Doing this means their mounted as the system is coming up.
That's pretty much it. You should now be able to remotely unlock your encrypted drives.I realised towards the end my internal IP is on the top of the putty windows, but I only really masked it from the examples to highlight a change. I hope people find this somewhat helpful. Any feedback welcome, I'm now off to start copying data over. and btw I've changed the keys incase anyone worries for me :)
UPDATE:-
I'm just running through this on 12.10 and ran into a problem whereby the ip address yyy.253 wasn't being released. Some searching suggested that network/interfaces will be ignored because of checks in the process that fail. This wasn;t the case for me, I was getting 2 addresses on the interface. The solution was to add:-
pre-up ip addr flush dev eth0
To /etc/network/interface to clear eth0 before applying the new IP.