There is an optional package called NODEUPD which can be used to do that.
However it requires human intervention to set things up, and the process
is not simple (you have to subscribe LISTSERV to a bunch of files from
NETSERV). In addition, LISTSERV must own enough disk space for 2 copies
of BITEARN NODES. Finally, this package is very old and all the functions
will not work 'as is'; the very low level of interest did not warrant
updating it when GENROUTS became available.
Eric