debusine.qualcomm.com not accessible over IPv6

[gagath]

IPv4 OK:

$ dig debusine.qualcomm.com A

; <<>> DiG 9.20.26-1-Debian <<>> debusine.qualcomm.com A
;; global options: +cmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 63455
;; flags: qr rd ra; QUERY: 1, ANSWER: 2, AUTHORITY: 0, ADDITIONAL: 1

;; OPT PSEUDOSECTION:
; EDNS: version: 0, flags:; udp: 65494
;; QUESTION SECTION:
;debusine.qualcomm.com.		IN	A

;; ANSWER SECTION:
debusine.qualcomm.com.	60	IN	A	52.35.31.75
debusine.qualcomm.com.	60	IN	A	184.33.125.47

;; Query time: 16 msec
;; SERVER: 127.0.0.53#53(127.0.0.53) (UDP)
;; WHEN: Fri Aug 21 10:43:34 CEST 2026
;; MSG SIZE  rcvd: 82

IPv6 not OK:

$  dig debusine.qualcomm.com AAAA

; <<>> DiG 9.20.26-1-Debian <<>> debusine.qualcomm.com AAAA
;; global options: +cmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 3640
;; flags: qr rd ra; QUERY: 1, ANSWER: 0, AUTHORITY: 1, ADDITIONAL: 1

;; OPT PSEUDOSECTION:
; EDNS: version: 0, flags:; udp: 65494
;; QUESTION SECTION:
;debusine.qualcomm.com.		IN	AAAA

;; AUTHORITY SECTION:
debusine.qualcomm.com.	762	IN	SOA	ns-85.awsdns-10.com. awsdns-hostmaster.amazon.com. 1 7200 900 1209600 86400

;; Query time: 0 msec
;; SERVER: 127.0.0.53#53(127.0.0.53) (UDP)
;; WHEN: Fri Aug 21 10:44:01 CEST 2026
;; MSG SIZE  rcvd: 127