On Wed, Jan 08, 2020 at 08:15:50PM +0530, Mukund Sivaraman wrote: > On Tue, Jan 07, 2020 at 12:20:01PM +0000, Niall O'Reilly wrote: > > What's surprising is that an authoritative name server > > shows both a decremented TTL value (as if it were answering > > from cache) and the AA flag. > > These days, another kind of authoritative nameservice seems to have > arrived - the "reverse proxy" idea adapted to DNS. It may forward an > authoritative query upstream, cache the result and return an > authoritative answer counting down the TTL. We know this scheme well as > a forwarder during resolution, but it appears it's being used in > authoritative service too.
... as a CDN service where the reverse proxy (forwarder) nameserver and the "master" nameserver are far away, and in different administration domains. _______________________________________________ dns-operations mailing list [email protected] https://lists.dns-oarc.net/mailman/listinfo/dns-operations
