Faked.
mkhybrid has actually been merged with mkisofs, so either OpenBSD version of
mkisofs should be updated, or the mkhybrid port should be based off
mkisofs 1.13 or newer.
Courtesy of Trevor Clarke <retrev@csh.rit.edu>
mkhybrid is a pre-mastering program to create iso9660 cd images with
optional Rockridge, Joliet, or HFS support. It is based on mkisofs
and generates a binary image which can be written onto a block device
such as a CDR drive.