Issue Releasing and Renewing IP Address

[Guest]

We have a DHCP server @ my office, we build PC/Laptops and send them out to
our regional office. Sometimes the PCs keep the IP Address for my office even
if we do a release then shutdown the system. I can release & renew and it
still has the original IP Address from my office... Any ideas why?

 

[Guest]

I have exactly the same problem, still I have no idea on where is the
problem. My guess is that the client will use exactly the same address for 2
reasons;

first, the DHCP requests should not reach your office's DHCP because it's a
broadcast. (exept if you configured something to redirect requests)

2nd, even if you would be able to reach it, you killed the lease, (both
server and client, right?) so if the server gives you a wrong adress anyway,
that would be because your server makes no difference between net "A" and net
"B", or because it kept in memory the MAC of your pc.

I have no clue on where to check, but I hope it gave you some ideas on where
the problem might be.

Regards