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From: brian@shift.utell.net (Brian Somers)
Newsgroups: comp.unix.bsd.freebsd.misc
Subject: Re: 2.2.1 libresolv.a - gethostbyname() always return NULL
Date: 8 Apr 1997 09:55:40 GMT
Organization: Awfulhak Ltd.
Lines: 28
Message-ID: <5id4ms$8md@ui-gate.utell.co.uk>
References: <5id2rj$75a@hpg30a.csc.cuhk.edu.hk>
Reply-To: brian@awfulhak.org, brian@utell.co.uk
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Xref: euryale.cc.adfa.oz.au comp.unix.bsd.freebsd.misc:38778
In article <5id2rj$75a@hpg30a.csc.cuhk.edu.hk>,
ktso@dcns.csc.cuhk.edu.hk (SO Kwok Tsun) writes:
> As subject, I have upgraded one of our FreeBSD box from 2.1.7 to
> 2.2.1. I notice a problem with the following program:
>
> #include <netdb.h>
> #include <stdio.h>
>
> main(){
> if (gethostbyname("cuhk.edu.hk")==NULL)
> printf("Null\n");
> }
>
> and I compile it using "cc dns.c -lresolv". It always return "Null".
> Anyone met the same problem?
You've got a resolver problem. This program should work, and does
work for me ;) It's easier to say "nslookup cuhk.edu.hk".
Do you have a nameserver running ? If not, what do /etc/resolv.conf,
/etc/host.conf and /etc/hosts say ?
> So K T, CUHK
--
Brian <brian@awfulhak.org> <brian@freebsd.org>
<http://www.awfulhak.demon.co.uk>
Don't _EVER_ lose your sense of humour !