> About the only hack I can see that *might* make sense would be that > home CPE does NOT honour the upstream lifetimes if upstream > connectivity is lost, but instead keeps the prefix alive on very > short lifetimes until upstream connectivity returns.
Yep, that's the hack I was getting at. As a non-technical end-user, once my CPE has got a prefix from my ISP and advertised it to the devices on my LAN, the same prefix should keep working until: -my ISP assigns a different one -the end of time whichever comes first :) Having my PC not be able to talk to my printer any more because my DSL / cable / wimax / whatever has been down for "too long" is not acceptable. Regards, Tim.