Hi, I am currently using IPv4 with the following network configuration which has worked fine for some months now: <network> <name>net0</name> <uuid>fa0c1c69-da82-1bef-fcb2-4c336bbexxxx</uuid> <forward dev='eth0' mode='route'/> <bridge name='virbr0' stp='on' forwardDelay='0' /> <ip address='78.47.xx.xx' netmask='255.255.255.xxx'> </ip> </network> The company hosting my server is now providing /64-IPv6-subnets to its customers - thus I'd like to take advantage of this and supply my guests with IPv6-subnets. Is it possible to do this without changing much of my setup (i.e. just changing some configuration files?)? I am using libvirt 0.6.3. Thanks, Martin