On 7 November 2012 00:57, Feng He <[email protected]> wrote: > 于 2012-11-7 0:34, Mike Jones 写道: > >> If a resolver has a smaller cached NS set (for >> example only the 2 cloudflare ones) and all of those servers are down >> it might go back to the parent and find the other servers that are >> still up. > > > Will a resolver (i.e, a BIND Cache) do this stuff automatically? that sounds > cool.
I have heard this technique discussed, i'm not sure how the commonly used resolvers (BIND, Unbound, powerdns, etc) behave with this regard. I suspect it will vary between vendor and potentially versions, either way I wouldn't count on resolvers being this kind to you. I did say might :) - Mike _______________________________________________ dns-operations mailing list [email protected] https://lists.dns-oarc.net/mailman/listinfo/dns-operations dns-jobs mailing list https://lists.dns-oarc.net/mailman/listinfo/dns-jobs
