On Wed, 2015-10-21 at 20:42 +0000, Lightner, Jeff wrote: > Because the purpose of DNS primarily is to equate a name with an IP as > applications talk to IPs not to names. When you have a CNAME you’re > equating one name with another name. That other name then has to be > looked up so the application knows what IP access.
This doesn't answer the OPs question (which is a good one). He's saying that the required IP address has *already been returned* in the first response, so why is a second query made? When I use dig to do a lookup of a cname, it makes only one query: ; <<>> DiG 9.9.5-3ubuntu0.5-Ubuntu <<>> www.angihigh.com.au [...] ;; ANSWER SECTION: www.angihigh.com.au/ ... CNAME angihigh.com.au. angihigh.com.au. ... A 27.121.64.62 [...] Maybe the application mentioned by the OP is not a smart as dig. Regards, K. -- ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ Karl Auer (ka...@biplane.com.au) http://www.biplane.com.au/kauer http://twitter.com/kauer389 GPG fingerprint: 3C41 82BE A9E7 99A1 B931 5AE7 7638 0147 2C3C 2AC4 Old fingerprint: EC67 61E2 C2F6 EB55 884B E129 072B 0AF0 72AA 9882 _______________________________________________ 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