[Cyphal/UDP] Architectural issues caused by the dependency between the node's IP address and its identity

The proposal actually simplifies the current draft, as I attempted to illustrate, since it reduces the design from two modes of communication down to one. The introduction of the local brokerage service would add further complexity to the original design with unclear benefits. Could you maybe elaborate on what advantages do you see in the multiport design based on the local brokerage service?