Альтернативы линуксового mount --bind для OpenBSD?

localhost:/var/ftp /var/www/ftp nfs ro 0 0

/var/ftp -ro -mapall=_ftp localhost

nfsd_flags=

# rcctl enable portmap mountd nfsd

# cat /etc/rc.conf.local
httpd_flags=
mountd_flags=
nfsd_flags=
portmap_flags=
slowcgi_flags=

# cat /etc/exports

/var/git/repositories -ro -mapall=git localhost

# cat /etc/fstab

05ba8b5eea56d65a.a / ffs rw,softdep,noatime,wxallowed 1 1

/dev/wd1b none swap sw 0 0

localhost:/var/git/repositories /var/www/cgit/repos nfs ro 0 0

# rcctl start portmap mountd nfsd
portmap(ok)
mountd(ok)
nfsd(ok)

# df
Filesystem                      512-blocks      Used     Avail Capacity  Mounted on
/dev/sd0a                         40219804  10135892  28072924    27%    /
localhost:/var/git/repositories   40219804  10135892  28072924    27%    /var/www/cgit/repos

# netstat -at | grep LISTEN
tcp          0      0  localhost.sunrpc       *.*                    LISTEN
tcp          0      0  *.nfsd                 *.*                    LISTEN
tcp          0      0  *.711                  *.*                    LISTEN
tcp          0      0  localhost.spamd-cf     *.*                    LISTEN
tcp          0      0  localhost.spamd        *.*                    LISTEN
tcp          0      0  localhost.smtp         *.*                    LISTEN
tcp          0      0  *.sunrpc               *.*                    LISTEN
tcp          0      0  localhost.8080         *.*                    LISTEN
tcp          0      0  delta.https            *.*                    LISTEN
tcp          0      0  delta.www              *.*                    LISTEN
tcp          0      0  *.642[mountd]          *.*                    LISTEN
tcp6         0      0  *.711                  *.*                    LISTEN
tcp6         0      0  localhost.smtp         *.*                    LISTEN
tcp6         0      0  fe80::1%lo0.smtp       *.*                    LISTEN

tcp          0      0  *.nfsd                 *.*                    LISTEN
tcp          0      0  *.sunrpc               *.*                    LISTEN
tcp          0      0  *.642[mountd]          *.*                    LISTEN