Specifies whether the type of the directory entry is:
cache - The LU has previously been located by a broadcast search
and the location information has been saved.
home - The LU is in the domain of the local network node and the
LU information has been configured at the local node.
register - The LU is at an end node that is in the domain of the local
network node. Registered entries are registered by the served end
node.