In internet design circles these themes are known as multihoming and the locator/id split problem. See eg https://labs.apnic.net/presentations/store/2004-07-27-

In internet design circles these themes are known as multihoming and the locator/id split problem. See eg https://labs.apnic.net/presentations/store/2004-07-27-multi6-arch.pdf https://labs.apnic.net/presentations/store/2004-07-27-multi6... Also IETF's envisioned post-TCP transport protocol (SCTP) supports multihoming natively but has failed to take off.