Add host machine(s) to the locked node list for product(s) p. host is the network host name for the required machine and hostid is its unique ID number. Note that the source of the unique ID depends on the make of the host machine.
You must ensure that the unique ID is given in the correct base. Note that there must be 1 or more node-locked licenses for this to have any effect. Node-locked licenses are available only on the listed hosts.
LispWorks Guide to the License Server - 16 Feb 2015