Re: [tlug] DNS servers down?

[Jonathan Byrne <jq@example.com>]

Jean-Christian Imbeault (jean_christian@example.com) wrote:

> [root@example.com]# telnet www.av-navi.co.jp 80
   ^^^^

WHACK!  :-)

> telnet: www.av-navi.co.jp: Temporary failure in name resolution
> www.av-navi.co.jp: Host name lookup failure
> 
> However a telnet to other world machines (like hotmail) works fine.

In other words, you're saying that the problem is only for that
one host?

> Does this mean that some nameserver (possibly my ADSL provider's) is 
> misbehaving?

I doubt it.

Let's look at what av-navi's (sounds like a pr0n site :-)
authoritative name servers have to say:

dig @example.com www.av-navi.co.jp

; <<>> DiG 9.2.0 <<>> @example.com www.av-navi.co.jp
;; global options:  printcmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 44337
;; flags: qr aa rd ra; QUERY: 1, ANSWER: 1, AUTHORITY: 2, ADDITIONAL: 2

;; QUESTION SECTION:
;www.av-navi.co.jp.		IN	A

;; ANSWER SECTION:
www.av-navi.co.jp.	43200	IN	A	202.229.69.8

OK, looks good.  Let's ask the other one:

dig @example.com www.av-navi.co.jp

; <<>> DiG 9.2.0 <<>> @example.com www.av-navi.co.jp
;; global options:  printcmd
;; connection timed out; no servers could be reached

Ooops, that one's out to lunch.

It would be useful to know more about your setup, though.  What
name servers are you using when on ISDN?  When on DSL?  Are
you actually changing your resolv.conf depending on how you're
connected, or are you just pointing at the same name server(s) in
all cases?

J