Much googling led to the overall opinion that the simplicity of unicast outweighs the network benefits of multicast.
I’m finding that multicast just works and for me where I don’t know what IPs have been handed to server (easy to find) or to the clients I’m finding the multicast address easy to use.
Can server send to a random ip and the client listen to the random ip if I use multiple unicast instead of multicast?
In unicast, the sender must target the receiver assigned address.