On 24/03/2016 14:47, Ben Bridges wrote: > Greetings. > > > > Is it possible in BIND to configure multiple resource records for the > same domain name, TYPE, and CLASS with different TTL values? For example: > > ... > > I tried it, and BIND set the TTL for all five records to 300 (or more > specifically, the TTL of the first one of the RRs in the file). I > looked for a BIND directive in the manual to change this behavior but > could find no obvious candidate.
Doing so would be contrary to ยง5.2 of RFC 2181: Resource Records also have a time to live (TTL). It is possible for the RRs in an RRSet to have different TTLs. No uses for this have been found that cannot be better accomplished in other ways. This can, however, cause partial replies (not marked "truncated") from a caching server, where the TTLs for some but not all the RRs in the RRSet have expired. Consequently the use of differing TTLs in an RRSet is hereby deprecated, the TTLs of all RRs in an RRSet must be the same. Ray _______________________________________________ Please visit https://lists.isc.org/mailman/listinfo/bind-users to unsubscribe from this list bind-users mailing list bind-users@lists.isc.org https://lists.isc.org/mailman/listinfo/bind-users
