MAC address 00 - 00 - 00 ...

crazycarl

Senior member
Jun 8, 2004
548
0
0
someone I know has a laptop that will connect to the internet fine at my house, when plugged into my lan. but at his network, he weill get an ip address that matches that of the gateway being used by their network ( it is a university administered network, he lives in student housing) . i went to troubleshoot it a bit, and using ipconfig /all i noticed his physical address was 00 - 00 - 00 etc, all zeros.
the universtiy tech support people can find nothing wrong from their end, but pinging gateway, dns, dhcp, or other computers on the network simply times out.
it can't resolve named computers on the network either, such as 'ping jessica' returns 'could not find host'
using winxp pro btw. hardware profile is fine.
also it will not release or renew the local ip when on his lan.
any ideas what is happening here?
 

JackBurton

Lifer
Jul 18, 2000
15,993
14
81
Yep, having a mac address of all zero can definitely cause a problem. I upgraded the BIOS on my motherboard (which had an integrated nic) and changed my mac address to all zeroes. When I tried to connect to my cable modem, it would never connect. When I flashed my nic with a utility to change the mac to a standard mac numerical layout, everything connected just fine. See if you can flash just the nic or maybe a BIOS update for that laptop.