DNS 64 and the new domain ipv4only.arpa

Stephane Bortzmeyer bortzmeyer at nic.fr
Mon Oct 21 12:35:04 UTC 2013


I try to understand DNS64 and there is a problem I don't get. I have
BIND configured with:

        dns64 2001:db8:1:64::/96 { // Network-Specific Prefix
              clients { me; };
        };

and it works, synthesis happens when the domain name has no AAAA records:

%  dig +cd @localhost -p 9053 AAAA twitter.com   
...
;; ANSWER SECTION:
twitter.com.		30 IN AAAA 2001:db8:1:64::c710:9c66
twitter.com.		30 IN AAAA 2001:db8:1:64::c710:9cc6
twitter.com.		30 IN AAAA 2001:db8:1:64::c710:9c06

I try it now on the new ipv4only.arpa, which has only A and not AAAA
and nothing happens:

% dig +cd @localhost -p 9053 AAAA ipv4only.arpa

; <<>> DiG 9.8.4-rpz2+rl005.12-P1 <<>> +cd @localhost -p 9053 AAAA ipv4only.arpa
; (1 server found)
;; global options: +cmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 62138
;; flags: qr rd ra cd; QUERY: 1, ANSWER: 0, AUTHORITY: 4, ADDITIONAL: 1

;; OPT PSEUDOSECTION:
; EDNS: version: 0, flags: do; udp: 4096
;; QUESTION SECTION:
;ipv4only.arpa.		IN AAAA

;; AUTHORITY SECTION:
ipv4only.arpa.		3038 IN	SOA sns.dns.icann.org. noc.dns.icann.org. (
				2013053904 ; serial
				7200       ; refresh (2 hours)
				3600       ; retry (1 hour)
				604800     ; expire (1 week)
				3600       ; minimum (1 hour)
				)
ipv4only.arpa.		3038 IN	RRSIG SOA 8 2 3600 20131028181436 (
				20131021083223 33820 ipv4only.arpa.
				GEbCQfPa1q8e0qaQTT5S1yrmfRp3Vx+lueUB+i846fCl
				/5J3mbew8PI2LMd7stndYwPARIDWjapyzyFk5de6/Yx9
				Nyxn0AOVr9wRnRPy14FCH0P05EQFYzklOkC5Fjzn/B+B
				z4ngG4hM3RfAkckhj0zZ5zMhiYbxucOK/U8T398= )
ipv4only.arpa.		3038 IN	RRSIG NSEC 8 2 3600 20131028191728 (
				20131021083223 33820 ipv4only.arpa.
				Id6eQDjnvBhqoZSOBsNKywa0yAEiaGmyakGFLG3Mc2/h
				lmjAPylP9fDdBORpdgnbV0AMt5JzzzIblDTsfs9sbKby
				cCRHkE+Vhchu/NnChM+xslJ15daNNLgYUQHd5xwvdzgP
				OdpknW9kyfpjR4Cj3dixxfFhrsFFNvZo2FOyTW0= )
ipv4only.arpa.		3038 IN	NSEC ipv4only.arpa. A NS SOA TXT RRSIG NSEC DNSKEY

;; Query time: 0 msec
;; SERVER: 127.0.0.1#9053(127.0.0.1)
;; WHEN: Mon Oct 21 14:33:52 2013
;; MSG SIZE  rcvd: 481

What did I miss?

BIND 9.9.4


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