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Bug 1184736 - libvirt should verify proper address family of <host> when updating network
Summary: libvirt should verify proper address family of <host> when updating network
Keywords:
Status: CLOSED ERRATA
Alias: None
Product: Red Hat Enterprise Linux 7
Classification: Red Hat
Component: libvirt
Version: 7.1
Hardware: x86_64
OS: Linux
medium
medium
Target Milestone: rc
: ---
Assignee: Laine Stump
QA Contact: Virtualization Bugs
URL:
Whiteboard:
Depends On:
Blocks:
TreeView+ depends on / blocked
 
Reported: 2015-01-22 07:36 UTC by Hu Jianwei
Modified: 2015-11-19 06:08 UTC (History)
6 users (show)

Fixed In Version: libvirt-1.2.17-5.el7
Doc Type: Bug Fix
Doc Text:
Clone Of:
Environment:
Last Closed: 2015-11-19 06:08:34 UTC
Target Upstream Version:
Embargoed:

Attachments (Terms of Use)


Links
System ID Private Priority Status Summary Last Updated
Red Hat Product Errata RHBA-2015:2202 0 normal SHIPPED_LIVE libvirt bug fix and enhancement update 2015-11-19 08:17:58 UTC

Description Hu Jianwei 2015-01-22 07:36:48 UTC 
Description of problem:
libvirt should verify proper address family of <host> when updating network

Version-Release number of selected component (if applicable):
libvirt-1.2.8-15.el7.x86_64

How reproducible:
100%

Steps to Reproduce:
[root@ibm-x3850x5-06 ~]# cat ip-dhcp-host.xml 
<host mac='52:54:00:cb:17:00' name='jiahu.example.com' ip='192.168.122.10'/>

[root@ibm-x3850x5-06 ~]# cat ipv6-dhcp-host.xml
<host id='00:04:58:fd:e4:15:1b:09:4c:0e:09:af:e4:d3:8c:b8:ca:1e' name="redhatipv6.redhat.com" ip='2001:db8:ca2:2::119'/>

[root@ibm-x3850x5-06 ~]# virsh net-update default add-first ip-dhcp-host ipv6-dhcp-host.xml --parent-index 0
Updated network default live state
[root@ibm-x3850x5-06 ~]# virsh net-dumpxml default
<network>
  <name>default</name>
  <uuid>6d4f9a7b-d8bc-4150-a891-46019e4c99a5</uuid>
  <forward mode='nat'>
    <nat>
      <port start='1024' end='65535'/>
    </nat>
  </forward>
  <bridge name='virbr0' stp='on' delay='0'/>
  <mac address='52:54:00:42:e5:99'/>
  <domain name='example.com'/>
  <dns>
    <forwarder addr='8.8.8.8'/>
    <forwarder addr='8.8.4.4'/>
    <txt name='hjw' value='redhat jiahu'/>
  </dns>
  <ip address='192.168.122.1' netmask='255.255.0.0'>
    <dhcp>
      <range start='192.168.1.2' end='192.168.5.254'/>
      <host id='00:04:58:fd:e4:15:1b:09:4c:0e:09:af:e4:d3:8c:b8:ca:1e' name='redhatipv6.redhat.com' ip='2001:db8:ca2:2::119'/>
    </dhcp>
  </ip>
  <ip family='ipv6' address='2001:db8:ca2:2::1' prefix='64'>
    <dhcp>
      <range start='2001:db8:ca2:2::100' end='2001:db8:ca2:2::1ff'/>
    </dhcp>
  </ip>
</network>

Actual results:
As shown above steps.

Expected results:
Should prevent such behavior.

Additional info:
[root@ibm-x3850x5-06 ~]# virsh net-update default delete ip-dhcp-host ip-dhcp-host.xml --parent-index 1
error: Failed to update network default
error: XML error: Invalid to specify MAC address '52:54:00:cb:17:00' in network 'default' IPv6 static host definition

Laine has sent a candidate patch to upstream.
https://www.redhat.com/archives/libvir-list/2015-January/msg00670.html
Comment 3 Laine Stump 2015-08-10 06:40:26 UTC 
This patch was pushed upstream:

commit 6a21bc119e37bafcbe5cfd13e57080d651296b43
Author: Laine Stump <laine>
Date:   Mon Jan 19 17:04:01 2015 -0500

    network: verify proper address family in updates to <host> and <range>
Comment 6 Shanzhi Yu 2015-09-06 10:06:49 UTC 
Verify this bug with libvirt-1.2.17-7.el7.x86_64 

1. Prepare a network 
# virsh net-dumpxml default6 
<network>
  <name>default6</name>
  <uuid>999fc2e3-a6e4-49a4-b7c2-0bf186ca182a</uuid>
  <forward mode='nat'>
    <nat>
      <port start='1024' end='65535'/>
    </nat>
  </forward>
  <bridge name='virbr1' stp='on' delay='0'/>
  <mac address='52:54:00:2d:3a:21'/>
  <ip address='192.168.123.1' netmask='255.255.255.0'>
    <dhcp>
      <range start='192.168.123.2' end='192.168.123.254'/>
    </dhcp>
  </ip>
  <ip family='ipv6' address='2001:db8:ca2:2::1' prefix='64'>
    <dhcp>
      <range start='2001:db8:ca2:2:1::10' end='2001:db8:ca2:2:1::ff'/>
    </dhcp>
  </ip>
</network>

2. Prepare a xml file 
# cat ipv6-host.xml 
<host id='00:04:58:fd:e4:15:1b:09:4c:0e:09:af:e4:d3:8c:b8:ca:1e' name="redhatipv6.redhat.com" ip='2001:db8:ca2:2::119'/>

3. Update network 

#virsh net-update default6  add-first ip-dhcp-host  ipv6-host.xml --parent-index 0 
error: Failed to update network default6
error: Requested operation is not valid: the address family of a host entry IP must match the address family of the dhcp element's parent

So this bug can be verified.
Comment 8 errata-xmlrpc 2015-11-19 06:08:34 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.

https://rhn.redhat.com/errata/RHBA-2015-2202.html
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