AAAA for backup server is now set
$ dig @ns1 backup01.cust.arpnetworks.com aaaa +short
fe80::21b:21ff:fe93:3e08
$ dig @ns2 backup01.cust.arpnetworks.com aaaa +short
fe80::21b:21ff:fe93:3e08
$
I've moved it into Testing on: https://trello.com/b/Ml0HXyJX/arp-networks-suggestions-and-feature-requests