IPv6 reverse lookup - lame delegation?

Jun-ichiro itojun Hagino itojun at itojun.org
Tue Feb 10 12:58:40 UTC 2004


	if i try to log into my machines back in tokyo by IPv6 SSH, it takes
	very long time.  i guess i found the reason - (possible) lame delegation
	of blah.ip6.int.  ip6.arpa. query returns instantly.
	how could we fix it?

itojun


% dig e.5.5.e.2.4.e.f.f.f.e.4.5.0.2.0.0.0.0.0.0.0.0.1.0.0.7.3.e.f.f.3.ip6.int. ptr

; <<>> DiG 9.2.3 <<>> e.5.5.e.2.4.e.f.f.f.e.4.5.0.2.0.0.0.0.0.0.0.0.1.0.0.7.3.e.f.f.3.ip6.int. ptr
;; global options:  printcmd
;; connection timed out; no servers could be reached

% dig e.5.5.e.2.4.e.f.f.f.e.4.5.0.2.0.0.0.0.0.0.0.0.1.0.0.7.3.e.f.f.3.ip6.arpa. ptr

; <<>> DiG 9.2.3 <<>> e.5.5.e.2.4.e.f.f.f.e.4.5.0.2.0.0.0.0.0.0.0.0.1.0.0.7.3.e.f.f.3.ip6.arpa. ptr
;; global options:  printcmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NXDOMAIN, id: 19137
;; flags: qr rd ra; QUERY: 1, ANSWER: 0, AUTHORITY: 1, ADDITIONAL: 0

;; QUESTION SECTION:
;e.5.5.e.2.4.e.f.f.f.e.4.5.0.2.0.0.0.0.0.0.0.0.1.0.0.7.3.e.f.f.3.ip6.arpa. IN PTR

;; AUTHORITY SECTION:
ip6.arpa.               10569   IN      SOA     dns1.icann.org. hostmaster.icann.org. 2003080400 3600 1800 604800 10800

;; Query time: 1 msec
;; SERVER: 127.0.0.1#53(0.0.0.0)
;; WHEN: Tue Feb 10 21:57:17 2004
;; MSG SIZE  rcvd: 151




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