This document discusses multihoming and mobility support in different network architectures. It analyzes RINA, a clean-slate design, in comparison to LISP and Mobile IP. RINA uses late binding of node addresses to points of attachment, limiting the scope of location updates. Simulation results show RINA has lower packet delivery costs than LISP due to its routing approach. RINA inherently supports mobility as nodes can join and leave different layers of the network.