dynamic dns and ip-down

[Ben Luey <lueyb@carleton.edu>]

I want to use justlinux.com's dynamic dns service. I've got the client
installed fine and added the connect line into /etc/ppp/ip-up.local
(mandrake 6.0 and pppd on dial on demand) and now whenever the link goes
up, it sets my ip. Great. The problem is that ppp runs
/etc/ppp/ip-down.local *after* it disconnects from the internet, so
instead of putting me in disconnect mode and then logining off, it logs
off and trys to tell justlinux I'm off and triggeres the link to go up.
How canI run a script right before the link it brought down?

Thanks,

Ben

Ben Luey
lueyb@carleton.edu
ICQ: 19144397