lpd is supposed to take a 'port#' argument on its command line which tells it which INET port number on which to listen. However, it doesn't. Patch and updated SRPM to fix this, and also add the special case '-1' to mean "Don't listen to an INET socket at all", at ftp.infradead.org:/pub/random/lp*
This is fixed in rawhide with the move to LPRng.