I rent a dedicated server (centos 6.7) with 4 IP addresses assigned to an adapater (eth1, eth1:1,eth1:2,eth1:2). Using the howto here: https://www.howtoforge.com/virtualization-with-kvm-on-a-centos-6.4-server I'm trying to create a bridge to eth1:2. The howto gave an example using eth0 and I copied substituting eth1:2 everywhere there was eth0. This didn't seem to work. What am I not understanding?