Yes, you can create two reth interface and have active/passive cluster.
Another thing to remember:
1. You can have both reth interfaces under same redundancy group.
2. If you would like to have each of the reth interfaces in a different redundany group, then you should make sure primacy of all redundancy group in same node.
Thank you for your quick reply.
I am familiar with redundancy groups, however I would like 2-interface bond in active/passive.
For example reth0 is active and running as 192.168.0.1. If reth0 is disconnected then reh1 becomes 192.168.0.1
You cannot have two different interfaces with same ip-address in same subnet.
Instead of creating two reth interfaces, you could add two ports from each nodes and have one reth interface(totally four ports in a reth, two from each of the nodes).