Marking IP Addresses Unusable by the DHCP Service

You can use the pntadm -M command with the -f UNUSABLE option to mark addresses unusable using the command line.

In DHCP Manager, you use the Address Properties dialog box, shown in Figure 11-10, to mark individual addresses, and the Modify Multiple Addresses dialog box, show in Figure 11-11, to mark multiple addresses, as described in the following procedure.