SI6 Networks 6connect Sky UK Cisco In scenarios where network configuration information becomes invalid without any explicit signaling of that condition (such as when a Customer Edge Router crashes and reboots without knowledge of the previously-employed configuration information), hosts on the local network will continue using stale network configuration information for an unacceptably long period of time, thus resulting in connectivity problems. This document specifies improvements to Customer Edge Routers that help mitigate the aforementioned problem for typical residential and small office scenarios. This document updates RFC7084.