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Bug 816164

Summary: nslookup exits with zero return value when DNS server is not accessible
Product: Red Hat Enterprise Linux 6 Reporter: Jan Stodola <jstodola>
Component: bindAssignee: Adam Tkac <atkac>
Status: CLOSED ERRATA QA Contact: qe-baseos-daemons
Severity: high Docs Contact:
Priority: high    
Version: 6.3CC: azelinka, jmarko, ovasik
Target Milestone: rc   
Target Release: ---   
Hardware: All   
OS: Linux   
Whiteboard:
Fixed In Version: Doc Type: Bug Fix
Doc Text:
Story Points: ---
Clone Of:
: 816166 829243 829829 (view as bug list) Environment:
Last Closed: 2012-06-20 13:41:20 UTC Type: Bug
Regression: --- Mount Type: ---
Documentation: --- CRM:
Verified Versions: Category: ---
oVirt Team: --- RHEL 7.3 requirements from Atomic Host:
Cloudforms Team: --- Target Upstream Version:
Embargoed:
Bug Depends On:    
Bug Blocks: 756608, 760559, 829243, 829829    

Description Jan Stodola 2012-04-25 11:48:39 UTC 
Description of problem:
nslookup exits with zero return value even when a query fails (DNS server doesn't respond): 

[root@rtt5 ~]# rpm -qf `which nslookup`
bind-utils-9.8.2-0.7.rc1.el6.s390x
[root@rtt5 ~]# nslookup 11.22.33.44 172.16.1.1
;; connection timed out; trying next origin
;; connection timed out; trying next origin
;; connection timed out; trying next origin
;; connection timed out; no servers could be reached

[root@rtt5 ~]# echo $?
0

Compare with the "host" command:
[root@rtt5 ~]# host 11.22.33.44 172.16.1.1
;; connection timed out; no servers could be reached
[root@rtt5 ~]# echo $?
1

Version-Release number of selected component (if applicable):
bind-utils-9.8.2-0.7.rc1.el6

How reproducible:
always

Steps to Reproduce:
1. nslookup 11.22.33.44 172.16.1.1
2. echo $?
  
Actual results:
0

Expected results:
non-zero value

Additional info:
This bug blocks verification of bug 756608, proposing as a blocker.
Comment 7 errata-xmlrpc 2012-06-20 13:41:20 UTC 
Since the problem described in this bug report should be
resolved in a recent advisory, it has been closed with a
resolution of ERRATA.

For information on the advisory, and where to find the updated
files, follow the link below.

If the solution does not work for you, open a new bug report.

http://rhn.redhat.com/errata/RHBA-2012-0830.html