Now that the root servers have IPv6 glue records, we're one step
closer to being able to successfully run IPv6-only for a bit in
Philadelphia. (What's the status of the preparations for that, by the
way? I'm still happy to volunteer.)
(Don't forget to download the new named.root file from www.iana.org.)
I'm now running IPv6-only to see how well this works, and I can't
reach www.ietf.org: currently there is no IPv6-clean path through the
DNS hiearchy from the root to the ietf.org servers.
# dig www.ietf.org aaaa
; <<>> DiG 9.4.1-P1 <<>> www.ietf.org aaaa
;; global options: printcmd
;; connection timed out; no servers could be reached
root -> .org is no problem:
# dig @h.root-servers.net www.ietf.org aaaa
; <<>> DiG 9.4.1-P1 <<>> @h.root-servers.net www.ietf.org aaaa
; (2 servers found)
;; global options: printcmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 64999
;; flags: qr rd; QUERY: 1, ANSWER: 0, AUTHORITY: 6, ADDITIONAL: 11
;; WARNING: recursion requested but not available
;; QUESTION SECTION:
;www.ietf.org. IN AAAA
;; AUTHORITY SECTION:
org. 172800 IN NS a0.org.afilias-nst.info.
org. 172800 IN NS b0.org.afilias-nst.org.
org. 172800 IN NS c0.org.afilias-nst.info.
org. 172800 IN NS d0.org.afilias-nst.org.
org. 172800 IN NS tld1.ultradns.net.
org. 172800 IN NS tld2.ultradns.net.
;; ADDITIONAL SECTION:
a0.org.afilias-nst.info. 172800 IN A 199.19.56.1
b0.org.afilias-nst.org. 172800 IN A 199.19.54.1
c0.org.afilias-nst.info. 172800 IN A 199.19.53.1
d0.org.afilias-nst.org. 172800 IN A 199.19.57.1
tld1.ultradns.net. 172800 IN A 204.74.112.1
tld2.ultradns.net. 172800 IN A 204.74.113.1
a0.org.afilias-nst.info. 172800 IN AAAA 2001:500:e::1
b0.org.afilias-nst.org. 172800 IN AAAA 2001:500:c::1
c0.org.afilias-nst.info. 172800 IN AAAA 2001:500:b::1
d0.org.afilias-nst.org. 172800 IN AAAA 2001:500:f::1
tld1.ultradns.net. 172800 IN AAAA 2001:502:d399::1
;; Query time: 325 msec
;; SERVER: 2001:500:1::803f:235#53(2001:500:1::803f:235)
;; WHEN: Tue Feb 5 10:32:17 2008
;; MSG SIZE rcvd: 420
but then:
# dig @2001:502:d399::1 www.ietf.org aaaa
; <<>> DiG 9.4.1-P1 <<>> @2001:502:d399::1 www.ietf.org aaaa
; (1 server found)
;; global options: printcmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 34106
;; flags: qr rd; QUERY: 1, ANSWER: 0, AUTHORITY: 5, ADDITIONAL: 0
;; WARNING: recursion requested but not available
;; QUESTION SECTION:
;www.ietf.org. IN AAAA
;; AUTHORITY SECTION:
ietf.org. 86400 IN NS ns1.yyz1.afilias-nst.info.
ietf.org. 86400 IN NS ns1.sea1.afilias-nst.info.
ietf.org. 86400 IN NS ns1.mia1.afilias-nst.info.
ietf.org. 86400 IN NS ns1.ams1.afilias-nst.info.
ietf.org. 86400 IN NS ns0.amsl.com.
;; Query time: 103 msec
;; SERVER: 2001:502:d399::1#53(2001:502:d399::1)
;; WHEN: Tue Feb 5 10:33:22 2008
;; MSG SIZE rcvd: 164
So ietf.org needs one or more nameservers with AAAA records.
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