Date: Tue, 18 Jul 2000 11:58:32 -0700 (MST) From: "Chad R. Larson" <chad@DCFinc.com> To: parag@cgt.com (Parag Patel) Cc: stable@FreeBSD.ORG Subject: Re: Telnet problem under 4.1-RC Message-ID: <200007181858.LAA20068@freeway.dcfinc.com> In-Reply-To: <46060.963943309@pinhead.parag.codegen.com> from Parag Patel at "Jul 18, 0 11:01:49 am"
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Check your /etc/host.conf file to see if you're using the /etc/hosts
file before the nameserver ("hosts" ahead of "bind"). If so, check
for a valid entry in your hosts file.
When you run "nslookup", it queries the nameserver directly. But
most applications call "gethostbyname(3)", which (depending on the
contents of /etc/host.conf and /etc/hosts) can return a different
result.
As I recall, Parag Patel wrote:
> All hostname lookups are failing from telnet, but only from telnet and
> only hostnames. Here's the problem:
>
> $ telnet localhost
> localhost: No address associated with hostname
> $ nslookup localhost
> Server: localhost.parag.codegen.com
> Address: 127.0.0.1
>
> Name: localhost.parag.codegen.com
> Address: 127.0.0.1
>
> $ ping -c 1 localhost
> PING localhost.parag.codegen.com (127.0.0.1): 56 data bytes
> 64 bytes from 127.0.0.1: icmp_seq=0 ttl=255 time=0.167 ms
>
> --- localhost.parag.codegen.com ping statistics ---
> 1 packets transmitted, 1 packets received, 0% packet loss
> round-trip min/avg/max/stddev = 0.167/0.167/0.167/0.000 ms
>
> $ telnet 127.0.0.1
> Trying 127.0.0.1...
> Connected to localhost.parag.codegen.com.
> Escape character is '^]'.
> login: ^D
> Connection closed by foreign host.
> $
>
> ftp/ssh/etc all work fine with the same hostnames. telnet works with an
> IP address but fails to lookup *any* hostname - local or otherwise - so
> it doesn't seem to be a telnetd problem. ftp works fine to localhost.
>
> I just now updated my copy of the CVS tree and updated /usr/src but
> nothing in the usr.bin/telnet directory has been updated. I can't spot
> anything obvious in the CVS logs either.
>
> Anyone have any ideas I can try out to figure out what's going on?
> (Odds are I've forgotten something.) Thanks in advance.
>
>
> -- Parag Patel
>
>
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>
-crl
--
Chad R. Larson (CRL15) 602-953-1392 Brother, can you paradigm?
chad@dcfinc.com chad@larsons.org larson1@home.net
DCF, Inc. - 14623 North 49th Place, Scottsdale, Arizona 85254-2207
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