当IP变化时，域中多个DHCP服务器不能正确更新相应的DNS名

If a DHCP server performs a secure dynamic update on a name, the DHCP server becomes the owner of that name, and only that DHCP server can update the name. This problem occurs when you use multiple Windows 2000 DHCP servers on your network and also configure your zones to allow to allow secure dynamic updates only.

The solution to this problem is to use Active Directory Users and Computers to add your DHCP server computers to the built-in DnsUpdateProxyGroup. This will permit all of your DHCP server the secure rights to perform proxy updates for any of your DHCP clients.