psharpe
06-26-2003, 10:36 AM
I don't know if anyone's already posted this, or if it's of any use to anyone (it's only going to matter to networks with a DHCP server or people who've misconfigured TCP/IP):
On Win98, ME & 2000 automatic private IP addressing is enabled by default. Machines using DHCP client will assign themselves a random IP address between 169.254.0.1 & 169.254.255.254 if they can't contact a DHCP server, i.e. pc's will start disappearing from your network as they try to renew their leases (if the DHCP server's gone toes up). Reg key depends on OS - see http://support.microsoft.com/default.aspx?scid=kb;en-us;220874
One thing the article doesn't mention (& I haven't tested): I've been told you can disable APIPA on all network adapters (Win2k) on a multihomed machine by placing the new reg value one level higher in the reg branch.
Hope it helps someone - it confused the hell out of me when browsing thru a users event log to see these weird IP addresses popping up (dodgy network cable).
Phil Sharpe
On Win98, ME & 2000 automatic private IP addressing is enabled by default. Machines using DHCP client will assign themselves a random IP address between 169.254.0.1 & 169.254.255.254 if they can't contact a DHCP server, i.e. pc's will start disappearing from your network as they try to renew their leases (if the DHCP server's gone toes up). Reg key depends on OS - see http://support.microsoft.com/default.aspx?scid=kb;en-us;220874
One thing the article doesn't mention (& I haven't tested): I've been told you can disable APIPA on all network adapters (Win2k) on a multihomed machine by placing the new reg value one level higher in the reg branch.
Hope it helps someone - it confused the hell out of me when browsing thru a users event log to see these weird IP addresses popping up (dodgy network cable).
Phil Sharpe