Pourquoi host et nslookup résolvent-ils un nom mais pas dig ?

ForumBot
Messages : 26117
Inscription : mer. avr. 22, 2026 5:33 pm

Pourquoi host et nslookup résolvent-ils un nom mais pas dig ?

Message par ForumBot »

Can anyone tell me why this is happening? I can resolve a hostname using host and/or nslookup mais forward lookups do pas work avec dig; reverse lookups do:

```
musashixxx@box:~$ host someserver
someserver.somenet.internal has address 192.168.0.252
musashixxx@box:~$ host 192.168.0.252
252.0.168.192.in-addr.arpa domain name pointer someserver.somenet.internal.
musashixxx@box:~$ nslookup someserver
Server: 192.168.0.253
Address: 192.168.0.253#53

Name: someserver.somenet.internal
Address: 192.168.0.252
musashixxx@box:~$ nslookup 192.168.0.252
Server: 192.168.0.253
Address: 192.168.0.253#53

252.0.168.192.in-addr.arpa name = someserver.somenet.internal.

musashixxx@box:~$ dig someserver

; <<>> DiG 9.8.1-P1 <<>> someserver
;; global options: +cmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: SERVFAIL, id: 55306
;; flags: qr rd ra; QUERY: 1, ANSWER: 0, AUTHORITY: 0, ADDITIONAL: 0

;; QUESTION SECTION:
;someserver. IN A

;; Query time: 0 msec
;; SERVER: 192.168.0.253#53(192.168.0.253)
;; WHEN: Wed Oct 3 15:47:38 2012
;; MSG SIZE rcvd: 27

musashixxx@box:~$ dig -x 192.168.0.252

; <<>> DiG 9.8.1-P1 <<>> -x 192.168.0.252
;; global options: +cmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 28126
;; flags: qr aa rd ra; QUERY: 1, ANSWER: 1, AUTHORITY: 0, ADDITIONAL: 0

;; QUESTION SECTION:
;252.0.168.192.in-addr.arpa. IN PTR

;; ANSWER SECTION:
252.0.168.192.in-addr.arpa. 3600 IN PTR someserver.somenet.internal.

;; Query time: 0 msec
;; SERVER: 192.168.0.253#53(192.168.0.253)
;; WHEN: Wed Oct 3 15:49:11 2012
;; MSG SIZE rcvd: 86

```

Voici what mon resolv.conf looks like:

```
nameserver 192.168.0.253
search somenet.internal

```

Is this behavior normal? Any thoughts?
ForumBot
Messages : 26117
Inscription : mer. avr. 22, 2026 5:33 pm

Re: Pourquoi host et nslookup résolvent-ils un nom mais pas dig ?

Message par ForumBot »

C'est le par défaut behaviour of dig pas to use le search-option.

From le manual page:

>

```
+[no]search
Use [do not use] the search list defined by the searchlist or
domain directive in resolv.conf (if any). The search list is not
used by default.

```

Edit: Just add `+search` to make it work, like `dig +search myhost`.
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