Prefer IPv6

[Heshmatkhah]

Hi

I have a complicated network situation, my IPv4 network is very limited in what I can access in addition to the limitation on speed and traffic.
But my IPv6 is completely open and okay.

Is there any way to force my Adgurd Home to reply with AAAA in response of A requests if possible?
I mean if the requested domain has AAAA record use them, and if it has no AAAA record and only A records return the A record?

For example currently:

$ dig @192.168.1.2 youtube.com A

; <<>> DiG 9.11.4-P2-RedHat-9.11.4-26.P2.el7_9.15 <<>> @192.168.1.2 youtube.com A
; (1 server found)
;; global options: +cmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 19575
;; flags: qr rd ra; QUERY: 1, ANSWER: 1, AUTHORITY: 0, ADDITIONAL: 1

;; OPT PSEUDOSECTION:
; EDNS: version: 0, flags:; udp: 1232
;; QUESTION SECTION:
;youtube.com.                   IN      A

;; ANSWER SECTION:
youtube.com.            256     IN      A       142.250.185.206

;; Query time: 8 msec
;; SERVER: 192.168.1.2#53(192.168.1.2)
;; WHEN: Wed Nov 01 14:06:08 UTC 2023
;; MSG SIZE  rcvd: 56



$ dig @192.168.1.2 youtube.com AAAA

; <<>> DiG 9.11.4-P2-RedHat-9.11.4-26.P2.el7_9.15 <<>> @192.168.1.2 youtube.com AAAA
; (1 server found)
;; global options: +cmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 63362
;; flags: qr rd ra; QUERY: 1, ANSWER: 1, AUTHORITY: 0, ADDITIONAL: 1

;; OPT PSEUDOSECTION:
; EDNS: version: 0, flags:; udp: 1232
;; QUESTION SECTION:
;youtube.com.                   IN      AAAA

;; ANSWER SECTION:
youtube.com.            196     IN      AAAA    2a00:1450:4001:80f::200e

;; Query time: 6 msec
;; SERVER: 192.168.1.2#53(192.168.1.2)
;; WHEN: Wed Nov 01 14:06:11 UTC 2023
;; MSG SIZE  rcvd: 68

I want it to be something like this:

$ dig @192.168.1.2 youtube.com A

; <<>> DiG 9.11.4-P2-RedHat-9.11.4-26.P2.el7_9.15 <<>> @192.168.1.2 youtube.com AAAA
; (1 server found)
;; global options: +cmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 63362
;; flags: qr rd ra; QUERY: 1, ANSWER: 1, AUTHORITY: 0, ADDITIONAL: 1

;; OPT PSEUDOSECTION:
; EDNS: version: 0, flags:; udp: 1232
;; QUESTION SECTION:
;youtube.com.                   IN      A

;; ANSWER SECTION:
youtube.com.            196     IN      AAAA    2a00:1450:4001:80f::200e

;; Query time: 6 msec
;; SERVER: 192.168.1.2#53(192.168.1.2)
;; WHEN: Wed Nov 01 14:06:11 UTC 2023
;; MSG SIZE  rcvd: 68

[travisboss]

I would suggest putting unbound after AGH and using their prefer ip6 feature.

[Heshmatkhah]

Thank you @travisboss.
I think the prefer-ip6 means that the server uses IPv6 to communicate with the upstream server, not to respond with AAAA records in response to A query which is what I want.

documentation,

prefer-ip6:
If enabled, prefer IPv6 transport for sending DNS queries to internet nameservers.
Default: no

I can write such an overwrite for a single domain manually, but I want it to apply to all domains and it is not possible:

/youtube.com/$dnsrewrite=2a00:1450:4001:80f::200e