routing eth0:1 directly to kvm VM

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http://serverfault.com – Ive got a Dedicated Server with 2 Public IP Adresses and would like to route all eth0:1 traffic to a KVM Guest via iproute2 or even iptables. Outgoing Traffic should also be routed to eth0:1 - eth0 and eth0:1 are assigned in different Subnets. Setup is/should be as following: eth0:1 <-> br1, gateway for tap1 <-> KVM Guest ()