[OpenAFS] NetInfo question

[Jason Edgecombe]

I'm confused as to the purpose of the NetInfo file. Do the fileserver 
and client automatically listen on all interfaces? I understand that 
NetRestrict excludes interfaces, but aside from using "f" for the 
fileserver behind NAT case, what is it used for?

If you have multiple network interfaces, do all of them need to be 
listed in the NetInfo file?

Is there an "f" syntax for the client, and if so, when would it be needed?

Thanks,
Jason