MOUNT_ZFS(8) System Manager's Manual MOUNT_ZFS(8)

mount_zfs
helper utility for mounting legacy ZFS mounts

mount_zfs ZFS_dataset mount_point

The mount_zfs utility supports mounting ZFS filesystems via /etc/fstab where the ZFS property is mountpoint=legacy.

fstab(5), zfs(8)

A command to manage legacy ZFS mounts appeared in Solaris as /etc/fs/zfs/mount. The mount_zfs utility first appeared in NetBSD 9.0.
September 15, 2019 NetBSD 9.4