Nmap: pissing. me. off.

[Ken D'Ambrosio]

Hey, all.  I'm writing up a script to do auto-provisioning on Asterisk,
and it works great thus-far.  Went to move it to a different machine,
though, and lo!  Stopped dead.  Digging deeper, I found that nmap -- which
I'm calling (in large part because it keeps track of vendor MAC
associations) isn't returning MACs.  I brought over the executable from
machine A (functioning) to machine B... and it exhibits the *exact* same
behavior.  Syntax:
nmap -sP 172.17.7.0/24

Every other machine I try it on returns MACs with a local subnet scan, as
root.  Except that one.  Any ideas?

Thanks!

-Ken