nanog mailing list archives
Re: DNS hostnames with a duplicate CNAME and A record - which should be removed?
From: Andrew Sullivan <asullivan () dyn com>
Date: Wed, 17 Oct 2012 15:41:24 -0400
On Wed, Oct 17, 2012 at 12:25:49PM -0700, Landon Stewart wrote:
hostname that have both a CNAME as well as an A record, MX record, SOA record and/or NS record. Is there an easy answer for what should be removed?
"You should remove the one that you don't need." A CNAME may not be at the same owner name as any other RR. If you need an alias, then you want a CNAME. If you need some other record, you need not to have a CNAME. If you think about what a CNAME is, it is obvious that it can't exist at the same name as any other RR, because it says "this name is actually that name over there".
Should the CNAME just get nuked in all of these cases?
Probably. A -- Andrew Sullivan Dyn Labs asullivan () dyn com
Current thread:
- DNS hostnames with a duplicate CNAME and A record - which should be removed? Landon Stewart (Oct 17)
- Re: DNS hostnames with a duplicate CNAME and A record - which should be removed? Andrew Sullivan (Oct 17)
- Re: DNS hostnames with a duplicate CNAME and A record - which should be removed? William Herrin (Oct 17)
- Re: DNS hostnames with a duplicate CNAME and A record - which should be removed? Tony Finch (Oct 18)
- Re: DNS hostnames with a duplicate CNAME and A record - which should be removed? jeff weisberg (Oct 18)
- Re: DNS hostnames with a duplicate CNAME and A record - which should be removed? Landon Stewart (Oct 18)
- Re: DNS hostnames with a duplicate CNAME and A record - which should be removed? Jimmy Hess (Oct 19)
- Re: DNS hostnames with a duplicate CNAME and A record - which should be removed? Masataka Ohta (Oct 19)