A list of reserved LUs and their associated IP
addresses is represented here for the containing
PU. Each LU is configured for a specific client
IP address. This association between the LU and
the client IP Address is called nailing. The client
is said to be nailed to its LU and visa-versa.
If the client IP address is known but the PU index
is not known, a more efficient way to access
this info is via tn3270sIpNailTable.