Bug 449053

Summary:	handle multiple nameservers in DHCPv6 reply
Product:	Red Hat Enterprise Linux 5	Reporter:	David Cantrell <dcantrell>
Component:	dhcpv6	Assignee:	David Cantrell <dcantrell>
Status:	CLOSED ERRATA	QA Contact:
Severity:	medium	Docs Contact:
Priority:	urgent
Version:	5.2	CC:	ryang
Target Milestone:	rc	Keywords:	ZStream
Target Release:	---
Hardware:	All
OS:	Linux
Whiteboard:
Fixed In Version:		Doc Type:	Bug Fix
Doc Text:		Story Points:	---
Clone Of:		Environment:
Last Closed:	2009-01-20 21:38:38 UTC	Type:	---
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:	253764, 449327

Description David Cantrell 2008-05-30 03:19:14 UTC

Handle multiple nameservers in option 23 in a DHCPv6 reply.

Do not print all nameserver addresses on one 'nameserver' line in /etc/resolv.conf.  Print each one on its 
own line, so we can handle an arbitrary number of nameservers in the reply.

Fix already upstream.

Comment 7 David Cantrell 2008-09-17 00:10:46 UTC

The patch for this problem was first available in dhcpv6-1.0.10-5.el5 and is still there.

Comment 10 David Cantrell 2008-09-25 22:05:48 UTC

You will need to create an /etc/dhcp6c.conf file and make sure the following lines are in the file:

interface INTERFACE {
    request domain-name-servers;
};

Where INTERFACE is something like 'eth0'.  dhcp6c will update /etc/resolv.conf only if it has a 'request domain-name-servers' option and/or a 'request domain-search-list' option in the configuration file for the interface you are using.

On the server, make sure you have this line in /etc/dhcp6s.conf:

option dns_servers <list of DNS servers>;

For example:

option dns_servers 2003::6:1 2003::6:2;

Just specify multiple name servers on the 'option dns_servers' line, separate the server addresses by a space.

Hope that helps.

Comment 15 errata-xmlrpc 2009-01-20 21:38:38 UTC

An advisory has been issued which should help the problem
described in this bug report. This report is therefore being
closed with a resolution of ERRATA. For more information
on therefore solution and/or where to find the updated files,
please follow the link below. You may reopen this bug report
if the solution does not work for you.

http://rhn.redhat.com/errata/RHBA-2009-0165.html