pdnsd sends a duplicate SOA record on AXFR query with LDAP backend

[anon]

I have pdnsd running with the ldap backend. There is a cosmetic bug -- when doing zone transfers, SOA record is sent twice. Here is a sample protocol run:

client > server | AXFR example.com
server > client | SOA dns.example.com
server > client | A x.x.x.x MX x.x.x.x etc
server > client | SOA dns.example.com

The second SOA answer is redundant as far as I can see.

# dpkg -l pdns* | grep ^ii
ii  pdns-backend-ldap 2.9.19-3build1 LDAP backend for PowerDNS
ii  pdns-server       2.9.19-3build1 extremely powerful and versatile nameserver

[ahu]

This is how DNS works, an AXFR is terminated by sending an additional SOA.