[LUAU] backup modem daemon?

[Jeff Mings]

Hi all,

    I've been looking for a an existing solution that will monitor a 
network pipe/route, like a roadrunner connection, and dial and set 
routing & firewall settings for a backup modem connection when the first 
pipe goes down.  Of course, I'd like it to restore original routing when 
the pipe is retored.  I could kludge together something with wvdial and 
diald, but was hoping to find an existing solution.  This is for a 
fedore core 3 box.

    Has anyone seen a package/script / daemon that will do this?

Thanks,

-Jeff