DNS proxy, "host" command and hosts files

[Miika Komu]

DNS proxy behaves strangely when looking up a host name that is located in the /etc/hip/hosts and /etc/hosts files. The strange behavior occurs with host command:

mkomu@bling:~$ host gai
gai has address 1.0.0.2
gai has IPv6 address 2001:15:e156:8a78:3226:dbaa:f2ff:ed06
Host gai not found: 3(NXDOMAIN)

But apparently not with dig:

mkomu@bling:~$ dig gai

; <<>> DiG 9.7.1-P2 <<>> gai
;; global options: +cmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 1814
;; flags: qr rd ra; QUERY: 1, ANSWER: 1, AUTHORITY: 0, ADDITIONAL: 0

;; QUESTION SECTION:
;gai. IN A

;; ANSWER SECTION:
gai. 122 IN A 1.0.0.2

;; Query time: 315 msec
;; SERVER: 127.0.0.53#53(127.0.0.53)
;; WHEN: Thu Nov 25 13:44:29 2010
;; MSG SIZE rcvd: 37

[Miika Komu (miika-iki)]

To clarify, the look up with "host" is successful but returns strangely an error:

Host gai not found: 3(NXDOMAIN)

[Paul Tötterman (ptman)]

Cannot reproduce.

What is the hosts -setting in your nsswitch.conf? I had:

hosts: files dns

and still strangely got the response from the hip dns proxy first.

[Miika Komu (miika-iki)]

I am running Ubuntu lucid and oneiric. They both have the same configuration:

hosts: files mdns4_minimal [NOTFOUND=return] dns mdns4

I tried also your configration, reboot the machine and tried again. The same problem occurs.

Note: the problem occurs independently of whether I am running dnsmasq or not

[Miika Komu (miika-iki)]

My hosts file configuration is as follows:

mkomu@bling:~$ grep gai /etc/hip/hosts /etc/hosts
/etc/hip/hosts:2001:15:e156:8a78:3226:dbaa:f2ff:ed06 gai
/etc/hip/hosts:1.0.0.2 gai
/etc/hosts:82.181.188.197 gai

Note: I do have some other entries as well.

[Miika Komu (miika-iki)]

Actually the error may be unrelated to DNS proxy. If I stop it, I get exactly the same error and no IP address is returned.