On 6 Mar 2019, at 11:27, Dave Lawrence <[email protected]> wrote: > Joe Abley writes: >> if you can find a set of DNS authority servers that silently >> discards a particular kind of query, sending such queries through >> resolvers that are known to support serve-stale might suppress other >> queries and trigger the serve-stale behaviour even though the >> authority servers are not actually unresponsive for them. > > RFC 2308 section 7.2 made it clear that when caching a dead server > indication, "The indication MUST be stored against query tuple <query > name, type, class, server IP address> unless there was a transport > layer indication that the server does not exist, in which case it > applies to all queries to that specific IP address."
Ahh, I forgot about that text in 2308! Good, then. Joe _______________________________________________ DNSOP mailing list [email protected] https://www.ietf.org/mailman/listinfo/dnsop
