Man pages matching name mknetid in section 8:

mknetid.8.ja	debian 10 / manpages-ja
mknetid.8.en	debian 10 / nis
mknetid.8.ja	debian 11 / manpages-ja
mknetid.8.en	debian 11 / ypserv
mknetid.8.ja	debian 12 / manpages-ja
mknetid.8.en	debian 12 / ypserv