VFS - Attaching a debugger

[William M. Grim]

Hey fellow DF users.

I finally got my system converted over to DF after an issue with 
ip_input.c being out of sync after a cvsup (causing natd to fatally trap).

However, I was wondering I could connect GDB to the VFS subsystem?  I'd 
like to step through some code to sort of see how the code works and get 
a sense for the flow of events.

Do you guys have tips on how I could do this?  Do I just run gdb against 
/kernel and set a breakpoint at something like "ip_input" (I know that's 
different than the VFS)?

Any tips would be appreciated.

-Mike