Bug 189997

Summary: Nasty PTR record from ssh and segfault in glibc
Product: [Fedora] Fedora Reporter: Jon Masters <jcm>
Component: glibcAssignee: Jakub Jelinek <jakub>
Status: CLOSED DUPLICATE QA Contact: Brian Brock <bbrock>
Severity: high Docs Contact:
Priority: medium    
Version: rawhideCC: jneedle, tmraz, yaneti
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Hardware: All   
OS: Linux   
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Last Closed: 2006-04-27 09:53:32 UTC Type: ---
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oVirt Team: --- RHEL 7.3 requirements from Atomic Host:
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Testcase none

Description Jon Masters 2006-04-26 15:27:41 UTC 
Description of problem:

Openssh refuses incoming connections and returns errors in the logs:

Nasty PTR record "perihelion.int.jonmasters.org" is set up for 192.168.1.3, ignoring

Version-Release number of selected component (if applicable):

4.3p2

How reproducible:

Very.

Steps to Reproduce:
1. ssh into box
2. it fails
3.
  
Actual results:

Cannot connect via ssh

Expected results:

Can connect to box

Additional info:

Tomas says it might be a problem glibc with a change in sematics to getaddrinfo.
Comment 1 Jon Masters 2006-04-26 15:40:37 UTC 
Setting "UseDNS no" in sshd_config works around the problem temporarily.
Comment 2 Tomas Mraz 2006-04-27 09:44:14 UTC 
Created attachment 128294 [details]
Testcase

Here is the testcase.
Comment 3 Tomas Mraz 2006-04-27 09:48:17 UTC 
So this is definitely a bug in glibc. At least it shouldn't segfault and I think
the semantics shouldn't change either.
Comment 4 Jakub Jelinek 2006-04-27 09:53:32 UTC 

*** This bug has been marked as a duplicate of 190002 ***