dig -n -x some:addr +trace issue

[Mark Andrews]

> 
> If I am on the nameserver where my ip6.int zone is served,
> a dig is returning:
> 
> /usr/local/bin/dig: Too many lookups
> 
> This happens on a linux 2.4.x nameserver, and a freebsd 4.7 nameserver.
> 
> The trace works fine up to the point where it hits the two
> local nameservers I have that are authoritative for the zone,
> then loops repeatedly until dig stops with the above message.
> 
> If I try the same query on my ipv6 enabled web server
> (that does not have a name server authoritative for the
> zone in question running on it),
> then the query/trace works as expected.
> 
> Here's the query I was using:
> 
> /usr/local/bin/dig -n -x 2001:470:1f00:974::1 +trace
> 
> Running this query on the nameservers without the +trace
> will return SERVFAIL, but it works fine on the web server,
> which is not running a nameserver.
> 
> My zones are setup for ip6.int. Looks like my problem is
> related to the query being for ...ip6.arpa.
> 
> I have a tunnel allocation via Hurricane Electric. I guess
> I am at their mercy with regards to int/arpa and my reverse
> zones? 
> 
> The ipv6tools.com web site also sees the problem with my
> zones.
> 
> I guess I should abandon ip6.int and move to ip6.arpa. This might
> be problematic with older hosts and their libc/resolver.
> 
> Reporting from the trenches...
> 
> ../Steven

	HE has delegated the following zone to you but you are not
	configured to serve it.
	
	HE delegates both IP6.INT and IP6.ARPA zones.

	Mark
	
4.7.9.0.0.0.f.1.0.7.4.0.1.0.0.2.ip6.arpa. 5000 IN NS smidge.wraith.sf.ca.us.
4.7.9.0.0.0.f.1.0.7.4.0.1.0.0.2.ip6.arpa. 5000 IN NS wraith.sf.ca.us.
;; Received 212 bytes from 3ffe:81d0:ffff:0:2d0:b7ff:fe21:aa51#53(ns2.ipv6.he.net) in 172 ms

; <<>> DiG 9.4.0a2 <<>> +norec soa 4.7.9.0.0.0.f.1.0.7.4.0.1.0.0.2.ip6.arpa. @smidge.wraith.sf.ca.us.
; (3 servers found)
;; global options:  printcmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 10922
;; flags: qr; QUERY: 1, ANSWER: 0, AUTHORITY: 11, ADDITIONAL: 7

;; QUESTION SECTION:
;4.7.9.0.0.0.f.1.0.7.4.0.1.0.0.2.ip6.arpa. IN SOA

;; AUTHORITY SECTION:
4.0.1.0.0.2.ip6.arpa.	70387	IN	NS	sec1.apnic.net.
4.0.1.0.0.2.ip6.arpa.	70387	IN	NS	sec3.apnic.net.
4.0.1.0.0.2.ip6.arpa.	70387	IN	NS	basil.arin.net.
4.0.1.0.0.2.ip6.arpa.	70387	IN	NS	henna.arin.net.
4.0.1.0.0.2.ip6.arpa.	70387	IN	NS	indigo.arin.net.
4.0.1.0.0.2.ip6.arpa.	70387	IN	NS	ns-sec.ripe.net.
4.0.1.0.0.2.ip6.arpa.	70387	IN	NS	epazote.arin.net.
4.0.1.0.0.2.ip6.arpa.	70387	IN	NS	figwort.arin.net.
4.0.1.0.0.2.ip6.arpa.	70387	IN	NS	ns.lacnic.net.
4.0.1.0.0.2.ip6.arpa.	70387	IN	NS	chia.arin.net.
4.0.1.0.0.2.ip6.arpa.	70387	IN	NS	dill.arin.net.

;; ADDITIONAL SECTION:
ns.lacnic.net.		149568	IN	A	200.160.0.7
sec1.apnic.net.		166617	IN	A	202.12.29.59
basil.arin.net.		10272	IN	A	192.55.83.32
henna.arin.net.		10272	IN	A	192.26.92.32
indigo.arin.net.	10272	IN	A	192.31.80.32
ns-sec.ripe.net.	72193	IN	A	193.0.0.196
ns-sec.ripe.net.	72194	IN	AAAA	2001:610:240:0:53::4

;; Query time: 200 msec
;; SERVER: 2001:470:1f00:974::1#53(2001:470:1f00:974::1)
;; WHEN: Thu Oct 20 08:36:27 2005
;; MSG SIZE  rcvd: 427

--
Mark Andrews, ISC
1 Seymour St., Dundas Valley, NSW 2117, Australia
PHONE: +61 2 9871 4742                 INTERNET: Mark_Andrews at isc.org