On 3/11/2012, at 2:29 PM, Alexandru Petrescu <alexandru.petre...@gmail.com> wrote:
> > (I am not sure this prohibition of advertising an expired prefix is > specified or coded, I just suppose it as natural). > > Alex > It is specified, unfortunately current implementations often fail to behave as specified. There is a second bit of wording, in 6402 I believe, which says that one ought to also immediately de-advertise (as in, for a few RA intervals send RAs with the lifetime set to zero) a prefix that no longer has upstream connectivity, even if the delegation still has valid lifetime and even if the lifetime you were previously advertising has not expired, until the upstream comes back. In other words, the RAs present on a link should at all times accurately reflect what prefixes are actually available and useful. Andrew -------------------------------------------------------------------- IETF IPv6 working group mailing list ipv6@ietf.org Administrative Requests: https://www.ietf.org/mailman/listinfo/ipv6 --------------------------------------------------------------------
