Dynamic DNS
Dynamic DNS is Windows Server 2008's way of bringing together the one good feature of WINS—automatic machine registration and record updating—with the resiliency and open standards advantage of DNS, a staple of the Internet. With dynamic DNS, machines running Windows 2000, Windows XP, Windows Server 2003, and Windows Server 2008 can register their presence automatically with the nameserver that controls the zone associated with their connection's DNS suffix. In the case of the examples so far in this chapter, if I have a machine named sales1.north.mycompany.com, this computer would automatically register an A record for that hostname and IP address with the nameserver that controls north.mycompany.com—a handy feature, indeed.
Figure 4-16 shows the actual flow of dynamic DNS registration when a workstation needs to register itself.

Figure 4-16. The flow of dynamic DNS registration
The process works a bit different when IP addresses are assigned by a Windows DHCP server. The client, when it receives its IP address from the DHCP server, only registers an A record in the nameserver's forward lookup zone. The DHCP server by default is responsible for registering the PTR records in the nameserver's reverse lookup zone, if one exists.
Tip
If you want to alter this behavior, you can configure the DHCP server to take care of both parts of the registration by looking on the properties ...