
Chapter 16 • IPv6 Autoconfiguration 273
Dynamic allocation DHCP assigns an IP address to a client for a limited
period of time (or until the client explicitly relinquishes the address).
Manual allocation A client’s IP address is assigned by the network
administrator, and DHCP is used simply to convey the assigned
address to the client.
In all cases, the DHCP server maintains state about the clients that use
DHCP to configure themselves. ISPs providing broadband services to con-
sumers (and other network providers) may configure their DHCP servers
to allocate addresses only to nodes with a particular link layer address to
prevent unauthorized use of their ...