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 :: Mailing Lists

[ILUG] Is it me or is it BIND?

[ILUG] Is it me or is it BIND?

Rick Moen rick at linuxmafia.com
Sun Aug 3 23:18:12 IST 2008


Quoting Lance Dryden (lkd-ilug at sky-haven.net):

> I'm guessing "lisa.com" is the root of the DNS zone.  As someone else 
> explained, CNAMEs are supposed not to coexist with anything else.

People tend to overuse CNAMEs -- using them where they're not really
needed nor very useful, and running afoul of limitations on what those
can do, where an equivalent A record would have no such problem.

My own policy is to limit use of CNAMEs to reference to out-of-domain
hosts only, e.g.:

:r! grep nsa  /etc/bind/linuxmafia.com.zone

nsa		IN	CNAME	bxa.doc.gov.


> In fact, do yourself a favor and set an A record for "www" as well. 
> It's just personal taste on my part, but I don't find it reasonable to 
> enforce a 2nd lookup...

Right.  That too.  If using CNAMEs for no better reason than
documentation, then comment lines work, too.




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