nfs share for a ct only

Hi,

we would use a external storage for a ct only. if we create on our 2nd network interface a eth1:1 interface, what must we do, to the ct have permission to this storage? do we must add a bridge to eth1:1 or do we must only add a local ip adress of the storage ip pool to the ct without adding eth1:1 on host machine? for authentification we do add the ip of ct. I hope you have a answer for us, very thanks.

regards