fixed-address address [, address ... ];

The fixed-address statement is used to assign one or more fixed IP addresses to a client. It should only appear in a host declaration. If more than one addresses are supplied, and the client boots, it will be assigned the address which corresponds to the network on which it is booting. If none of the addresses in the fixed-address statement are on the network on which the client is booting, that client will not match the host declaration containing that fixed-address statement. Each address should be either an IP address or a domain name which resolves to one or more IP addresses.