; <<>> DiG 9.6.0-P1 <<>> @s-dns.irz42.net colexon.fr a
;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 9582
;; flags: qr aa rd ra; QUERY: 1, ANSWER: 1, AUTHORITY: 0, ADDITIONAL: 0


; <<>> DiG 9.6.0-P1 <<>> @s-dns.irz42.net colexon.fr aaaa
;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 25769
;; flags: qr rd ra; QUERY: 1, ANSWER: 0, AUTHORITY: 0, ADDITIONAL: 0


Why is the query for aaaa not authorative?!
With BIND, both are the same