[Kea-users] ddns fails with powerDNS (Failed PreRequisites check)

[MRob]

Has anyone found how to make kea-ddns work with PowerDNS? pdns logs 
suggest:

pdns[20989]: UPDATE (50855) from 10.10.1.254 for lan.: Failed 
PreRequisites check, returning 6

The query log shows only some normal SELECT statements. If it's not a 
known problem can anyone show how to find what the DNS UPDATE command is 
being sent to the DNS server to diagnose?

Someone else had problem but couldn't get resolution:
https://github.com/PowerDNS/pdns/issues/5830



Also, can anyone tell me, for reverse DNS updates to work, do I need SOA 
record for the reverse domain?