> Given that there is no official supported way to put an > auto_upgrade.conf onto an existing bsd.rd, what would be a suggested > way to achieve the same end result - in this case, an automated > non-interactive, off-line upgrade?
Hack up a solution however you like. But understand it isn't within our mandate to keep your hack working. So basically, it will break because it is relying on behaviours which are not a mainline requirement. It will break, like it just did.

