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IPv6-clean path from root to www.ietf.org?

2008-02-05 14:21:28
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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