Public bug reported:
The source package provides src/network/default.xml.in which we use to
set up the default network in package libvirt-daemon-config-network's
post install script (libvirt-daemon-config-network.postinst.in).
This default.xml only defines an IPv4 network.
As over half of the internet traffic nowadays is IPv6 it would be
preferable if the network setup would support IPv6 by default.
I am using the following definition for this:
<network>
<name>default</name>
<uuid>9ee16a91-d70e-4dc4-9e56-d2e5e9fd98be</uuid>
<forward mode='nat'>
<nat ipv6='yes' />
</forward>
<bridge name='virbr0' stp='on' delay='0'/>
<mac address='52:54:00:4e:b6:13'/>
<ip address='192.168.122.1' netmask='255.255.255.0'>
<dhcp>
<range start='192.168.122.2' end='192.168.122.254'/>
</dhcp>
</ip>
<ip family='ipv6' address='fd42:1234:5678:100::1' prefix='64'>
</ip>
</network>
As IPv6 may be completely disabled on a host we should check if
/proc/sys/net/ipv6 exists before using a dual stack template for setting
up the default network.
** Affects: libvirt (Ubuntu)
Importance: Wishlist
Status: New
** Changed in: libvirt (Ubuntu)
Importance: Undecided => Wishlist
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https://bugs.launchpad.net/bugs/2164836
Title:
Libvirts network default does not support IPv6
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