debugging / logging udev?

[Arthur Marsh <arthur.marsh@internode.on.net>]

I'm trying to track down what is going on with my eth0 interface not 
coming up automatically on my amd64 machine with recent versions of udev 
219-10 or later, see:

http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=787364

Are there any good guides to debugging / logging udev? I'm unsure how to 
log debugging output of udev to a file.

Arthur.