Path: utzoo!attcan!uunet!unsvax!jimi!duke.cs.unlv.edu!greg
From: greg@duke.cs.unlv.edu (Greg Wohletz)
Newsgroups: comp.protocols.tcp-ip.domains
Subject: questionable resolver code
Message-ID: <1891@jimi.cs.unlv.edu>
Date: 10 Aug 90 05:28:52 GMT
Sender: news@jimi.cs.unlv.edu
Reply-To: greg@duke.cs.unlv.edu (Greg Wohletz)
Organization: UNLV Computer Science and Electrical Engineering
Lines: 22

in the routine res_search is the following line of code:


if ((n == 0 || *--cp != '.') && (_res.options & RES_DEFNAMES))


If you examine the routine you will notice that n > 0 if there were
any .'s in the name passed to res_search.  I believe the intent was to
only append the local domain name in the case where there was no . in
the name passed to res_search, but instead the behavior is to append
the local domain name whenever the name does not end with a .  Hence
when I type ``ping jimi.cs.unlv.edu'' it causes queries like
jimi.cs.unlv.edu.cs.unlv.edu to be generated.  This is greatly
increasing the number of queries on my network.  I believe the line
should read:

if ((n == 0) && (_res.options & RES_DEFNAMES))


What do you think?

    	    	    	    	    --Greg