[libvirt-users] FailOver IP

hi guys! i`am new to libvirt and i want using kvm with a ipv4 failover ip-address. so this addres has the netmask 255.255.255.255. this ip is directly bind to my root server by my provider. so i can not use it on an other server. can you tell me how i can use this ip address on a kvm virtual maschine, build with libvirt? Kind regards, Chris