How do I publish default router preferences as defined in RFC 4191 (https://tools.ietf.org/html/rfc4191) using rad in OpenBSD 6.5? I've read the friendly rad.conf man page (https://man.openbsd.org/rad.conf.5) and scanned the source (https://github.com/openbsd/src/tree/master/usr.sbin/rad) with no success.
Thanks, -Caleb