Bug 503712 – libvirtd does not listen by default to IPv6

Bug 503712 - libvirtd does not listen by default to IPv6

Summary:	libvirtd does not listen by default to IPv6

Status:	CLOSED CURRENTRELEASE

Aliases:	None

Product:	Virtualization Tools
Classification:	Community
Component:	libvirt (Show other bugs)
Sub Component:
Version:	unspecified
Hardware:	All Linux

Priority	low Severity medium
Target Milestone:	---
Target Release:	---
Assigned To:	Daniel Veillard
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Reported:	2009-06-02 07:28 EDT by Bernie Innocenti
Modified:	2010-03-16 13:20 EDT (History)
CC List:	3 users (show)

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Fixed In Version:
Doc Type:	Bug Fix
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Last Closed:	2009-11-26 10:15:23 EST
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RHEL 7.3 requirements from Atomic Host:
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Description Bernie Innocenti 2009-06-02 07:28:20 EDT

Description of problem:
In order to get libvirtd to listen on IPv6, you have to manually
set 'listen_addr = "::"' in /etc/libvirt/libvirtd.conf.  By default,
it listens only on 0.0.0.0 (IPv4).

Version-Release number of selected component (if applicable):
libvirt-0.6.2-11.fc11.x86_64

How reproducible:
always

Steps to Reproduce:
netstat -A inet6 -lnp | grep libvirtd
  
Actual results:
no output

Expected results:
tcp        0      0 :::16509                    :::*                        LISTEN      23321/libvirtd      
tcp        0      0 :::16514                    :::*                        LISTEN      23321/libvirtd      


Additional info:

Comment 1 Daniel Berrange 2009-06-02 07:52:58 EDT

Looks like getaddrinfo() is returning the IPv4 address before the IPv6 address, and since Linux defaults to net.ipv6.bindv6only=0, when libvirtd tries to listen on the IPv6 address  it fails with EADDRINUSE.  I really don't know why it isn't returning the IPv6 address first during the lookup.

Comment 2 Daniel Berrange 2009-06-02 08:00:33 EDT

Data point: Works correctly on RHEL-5. Fails on Fedora 9 & 11

Comment 3 Daniel Berrange 2009-11-13 06:20:36 EST

Fix pushed upstream

http://www.redhat.com/archives/libvir-list/2009-November/msg00386.html

Comment 4 Daniel Berrange 2009-11-26 10:15:23 EST

Fixed in 0.7.4 release

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