>You query for "m" ... >Meanwhile, at the authority, "m" is added and "ll" is deleted. ...
>You query for "l". ... >Meanwhile at the authority, everything but @ is deleted. This doesn't strike me as a very persuasive argument. The DNS is not Oracle, and has never promised to be perfectly coherent. If my cache queries you for x, you say x doesn't exist, then you add x to the server, my cache will continue to say x doesn't exist until the TTL for the cache entry expires. This shouldn't surprise anyone. Synthesized NXDOMAINs slightly increase the range of x for which cached answers might be stale, but it's hard to see that as a big deal. If your applications depend on up to date cached data, use short TTLs like everyone else does. For example, I see the SOA for www.nominum.com have a TTL of one minute. R's, John _______________________________________________ DNSOP mailing list [email protected] https://www.ietf.org/mailman/listinfo/dnsop
