slapcat -n 0 and slapadd

Having migrated to dynamic config, I'm looking for a reasonable way to restore in the event of a disaster.

The discussion last week got me curious and though I can slapcat -n 0 -l $SOME_FILE I can't slapadd this same file because it complains that I don't have a slapd.conf file, which of course is true... I haven't needed it with the dynamic configuration backend.

What's the minimum that I would need in a slapd.conf file so I can simply 'rm -fr /var/lib/ldap/* && slapadd -l $SLAPD_BACKUP' ?