Originally Posted by superbill

Hi guys

I might be clutching at straws here but found the following post that I was not aware of.
"It seems to be a problem with the BROADCAST flag in DHCP discovery packets. In XP it’s off and in Vista it’s on. Non Microsoft DHCP servers don’t like this. See the fix on the next page;

1. Start –> run –> regedit.exe
2. HKEY_LOCAL_MACHINESYSTEMCurrentControlSetServicesT cpipParametersInterfaces{GUID}
3. {GUID} sub-key refers to the network adapter that is having the issue. In my case my Intel Pro 2200BG card.
4. Add a new DWORD (32bit) value and rename it to “DhcpConnDisableBcastFlagToggle”.
5. Modify the “DhcpConnDisableBcastFlagToggle” key and change the value to “1″.
6. Modify the “DhcpConnForceBroadcastFlag” key and change the value to “0″.
7. Reboot and test the connection again with DHCP. (The reboot is optional)

Read the full article at Microsoft



Hope it helps!!!!!!!!