Hamish
Sep 23, 2008Cirrocumulus
Multiple CNAME's...
Question... Why is there a blog in F5's website recommending multiple CNAME records for a name? It pretty comprehensively violates the RFC's and in Bind v9 is also impossible to do (Since bind9 checks your syntax).
Trying to configure multiple CNAME records will likely result in an outage to your DNS servers... The docs from isc.org say the following
multiple-cnames
This option was used in BIND 8 to allow a domain name to have multiple CNAME records in violation of the DNS standards. BIND 9.2 onwards always strictly enforces the CNAME rules both in master files and dynamic updates.
Pretty clear really... So why do F5 push info (Admittedly in a blog) that's possibly going to cause a site outage (Or slowdown) for someone?
Sorry, but posts like this tend to push my buttons. We should be striving to keep to the standards and work with them. Not pushing violations of them that work with SOME browsewrs or SOME implementations of a service. If astandard is indeed lacking in something then perhaps we need to push for an extension that would be implemented by everyone. This just smacks of a continuance of websites that only work with a particular browser.
And that's just wrong...