I'm puzzled by the ClouDNS "ALIAS" record. I was wondering if anyone knows how it is handled "under the hood"?
It seems to be a non-standard extension that some DNS providers support. It seems to work similarly to, but not quite the same way as, a CNAME. Its big advantage over a CNAME is that it can coexist with other records of the same name (LHS). However, it seems to be non- standard. - when you look up the LHS, you do not get the ALIAS RHS back - it seems to internally look up the RHS, and return those results - if you make an A query, you get any matching A records back, as well as the results from any ALIAS records with the same LHS - the TTLs of records obtained via the ALIAS are inherited from the TTL of the ALIAS record - the real TTLS of the A records behind the ALIAS are lost. This seems to be risky Same providers say it is faster to resolve than a CNAME; I can't see why that would be. Regards, K. -- ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ Karl Auer (ka...@biplane.com.au, he/him) http://www.biplane.com.au/kauer -- Visit https://lists.isc.org/mailman/listinfo/bind-users to unsubscribe from this list ISC funds the development of this software with paid support subscriptions. Contact us at https://www.isc.org/contact/ for more information. bind-users mailing list bind-users@lists.isc.org https://lists.isc.org/mailman/listinfo/bind-users
