Improving the Robustness of Stateless Address Autoconfiguration (SLAAC) to Flash Renumbering Events

In scenarios where network configuration information becomes invalid without explicit notification to the local network, local hosts may end up employing stale information for an unacceptably long period of time, thus resulting in interoperability problems. This document improves the reaction of IPv6 Stateless Address Autoconfiguration to such configuration changes. It formally updates RFC4191, RFC4861, RFC4862, RFC8106, and RFC9096.