LDAP backend with strict mode does not work with shorthand AAAA records

[Freddo3000]

• This is not a support question, I have read about opensource and will send support questions to the IRC channel, GitHub Discussions or the mailing list.
• I have read and understood the 'out in the open' support policy

• Program: Authoritative
• Issue type: Bug report

Short description

Shorthand AAAA records using the LDAP backend in strict mode don't create PTR records, while fullsize AAAA records do.

Environment

• Operating system: Linux
• Software version: 49
• Software source: https://hub.docker.com/r/powerdns/pdns-auth-49

Steps to reproduce

1. Set up a ldap backend according to https://doc.powerdns.com/authoritative/backends/ldap.html
2. Set ldap-mode to strict
3. Create a SOA for a ip6.arpa record
4. Create a entry with a shorthand ipv6 dns record, ie 1:2::3, notice that PTR records don't resolve
5. Expand to 1:2:0:0:0:0:0:3, notice that PTR records now resolve

Expected behaviour

Shorthand ipv6 AAAA records should register PTR records the same way as full size ipv6 addresses.

Actual behaviour

Shorthand ipv6 AAAA records don't register corresponding PTR records.

Other information

[Habbie]

this is documented at https://doc.powerdns.com/authoritative/backends/ldap.html#ipv6-reverse-lookup-doesn-t-work-in-strict-mode, and is unlikely to see improvement any time soon