>From: Thorsten Flick <[EMAIL PROTECTED]>
>Date: Thu, 16 Nov 2000 16:37:49 +0100
>DNS is running well. and i administer it for myself.
Good -- reducing the effects of "middlemen" helps get work done. :-}
>> [stuff about gethostbyname() & gethostbyaddr()...]
>Ok, i will test this. But, did nslookup not use them ?
I'm pretty sure that all (UNIX) versions of nslookup uses gethostbyname();
I'm less confident about their use of gethostbyaddr(). (I'm pretty sure
that there have been some versions of nslookup that would try to do a
gethostbyname() using an IP address as an argument, if you gave it an IP
address. But the machine I have where that was likely the case stopped
working a few months ago, and I don't have the time to get a Sun 3/60 running
again... and I'm digressing. For those versions of nslookup, it was
generally necessary to feed it something of the form
ddd.ccc.bbb.aaa.in-addr.arpa (assuming an IP address "aaa.bbb.ccc.ddd").)
For the past few years, I've found the "host" command more useful for
diagnosing DNS issues. There's also DiG, but I confess I haven't got
around to learning how to use it -- host does enough for nearly all of
my needs (and it's shorter to type than "nslookup" :-) -- though not as
short as "dig"). In any case, "host" will perform a gethostbyaddr() if
you give it a normal IP address:
pau-amma[1]: host www.sun.com
www.sun.com has address 192.18.97.241
pau-amma[2]: host 192.18.97.241
241.97.18.192.IN-ADDR.ARPA domain name pointer www.sun.com
(The "nslookup", "host", and "dig" commands I'm using are all part of the
BIND 8.x distribution from ftp.isc.org.)
>Thnx for your answer ...
Glad to help,
david
--
David Wolfskill [EMAIL PROTECTED] UNIX System Administrator
Desk: 650/577-7158 TIE: 8/499-7158 Cell: 650/759-0823
