This field is used to specify an address to use when establishing a
 network management connection to the node.  This parameter can be
 specified only if an explicit node name is entered, with no wildcard
 characters.

 Once the connection is established, the node's tower set is obtained
 and is used to update the directory service entry.

 The address value can be one of:

     One of the node's NET or NSAP addresses
     The node's Phase IV address

 An NET is an NSAP address value with an N-Sel value of "00" (indicating
 that it is independent of the type of transport service in use on the
 node).  If you specify an NSAP instead of an NET, it is converted to an
 NET before it is used.

   DNA format:  <afi>:<idi>:<predsp>-<locarea>:<nodeid>:00
   OSI format:  <afi><idi>+<predsp><locarea><nodeid>00

 Examples of NETs might be:

   DNA format:  39:840:0001:AA-00-04-00-05-04:00
   OSI format:  39840+0001AA000400050400

 If the node has a Phase IV address, that can be used instead of an NET.

   Format:      <area>.<nodeid>
                <area>.<nodeid>+<prefix>

 This is internally converted to an NET, using the Phase IV prefix value.
 The Phase IV prefix value can be specified with the Phase IV address,
 or set as a default using the preferences form.

 Examples of a Phase IV address might be:

   1.5                                Uses the default Phase IV prefix
   1.5+39:840                         Uses an explicit Phase IV prefix

 If a value is not specified, the currently registered addresses for the
 node are tried.  If none of these result in a connection, an error is
 reported.