Hello Mikael, Le 17 oct. 2014 à 08:45, Mikael Abrahamsson <[email protected]> a écrit :
> On Fri, 17 Oct 2014, Lorenzo Colitti wrote: > >> You keep mentioning this, but you're incorrect. Even if the ISP >> flash-renumbers, hosts will not lower the lifetime of their IP addresses >> below 2 hours, per RFC 4862. > > Where in RFC4862 is this described? > > A lot of time was spent on RF7084 and its predecessor, making sure it was a > requirement to send RAs with zero-lifetime for the on-link prefix if the > delegated prefix went away, so hosts would stop using it very quickly. There are two different things If you loose WAN connectivity, you send RAs with router-lifetime set to zero. Meaning you are not a default route. (RFC7084 - G-4) If you loose a DP, you send RAs with PIO lifetimes set to ‘prefered’=0 and ‘valid’=min(DP lifetime, 2 hours). (RFC7084 - L-13) So the host can keep using the prefix during 2 hours. The preferred lifetime set to zero would of course suggest him to use a different one instead. > > So my expectation if the ISP flash-renumbered (ie reset the PPPoE session, > the physical uplink went down or the DHCPv6-PD lease expired), an RFC7084 > compatible router would send out RAs with zero-lifetime and hosts would > immediately stop using these IPs for new connections. Am I wrong, and where > can I read up on the behaviour you're describing? > > -- > Mikael Abrahamsson email: [email protected] > > _______________________________________________ > homenet mailing list > [email protected] > https://www.ietf.org/mailman/listinfo/homenet _______________________________________________ homenet mailing list [email protected] https://www.ietf.org/mailman/listinfo/homenet
