add SOA rr in AUTH section when QTYPE=IXFR
add SOA rr in AUTH section when QTYPE=IXFR



threatstack/libldns,threatstack/libldns,threatstack/libldns,NLnetLabs/ldns,gegenschall/ldns,benlaurie/ldns,benlaurie/ldns,NLnetLabs/ldns,threatstack/libldns,gegenschall/ldns,benlaurie/ldns,NLnetLabs/ldns,gegenschall/ldns,benlaurie/ldns,threatstack/libldns,NLnetLabs/ldns,gegenschall/ldns