Some time back, a second network card was added to our i. One card is
on 172.x.x.x and the other is on 10.x.x.x.
Most activity is now off the i, compared to what was there last October.
Network guy wants to shut down the 172.x.x.x address.
Is there a way to determine if that address is still used by somebody?
Even if not at a particular moment?
The other option is to shut down the 172.x.x.x and wait for the calls
to come in.