update_iface('vmbr0', [], ovs_ports => 'eth1 eth2');
expect load('loopback') . <<"/etc/network/interfaces";
auto eth0
iface eth0 inet manual
update_iface('vmbr0', [], ovs_ports => 'eth1 eth2');
expect load('loopback') . <<"/etc/network/interfaces";
auto eth0
iface eth0 inet manual