I'm trying to set up a virtual NAT network device without DHCP for libvirt on an Arch Linux host.
What I have tried:
# virsh net-define network.xml
Network default defined from network.xml
[network.xml
]:
<network>
<name>default</name>
<bridge name="maas0" />
<forward mode="nat" />
<ip address="10.137.0.1" netmask="255.255.255.0" />
</network>
My laptop outputs the following on start-up:
# virsh net-start default
error: Failed to start network default
error: internal error: Failed to initialize a valid firewall backend
All other threads concerning this topic are talking about upgrading software -- I'm using the most current versions:
$ pacman -Q ebtables dnsmasq libvirt iptables
ebtables 2.0.10_4-5
dnsmasq 2.75-1
libvirt 1.3.3-1
iptables 1.4.21-3
What could be the reason for that internal error
and what can I do against?