From AWS route 53 to Bind9

Mark Andrews marka at isc.org
Sun Feb 5 06:06:00 UTC 2017


In message <1aeb1e7d-f2e2-dd1e-baf2-96729656f328 at thelounge.net>, Reindl Harald writes:
> 
> 
> Am 04.02.2017 um 22:30 schrieb Mark Andrews:
> > It has been suggested many times that there should be a record which
> > says which server(s) serve a zone for HTTP and HTTPS.  We could do
> > this with SRV (_http._tcp.example.com and _https._tcp.example.com)
> > or we could come up with a new record example.com HTTP <server>.
> 
> for the thread starter - use https://intodns.com/ to find out and fix 
> common mistakes in dns zones
> 
> > Browser vendors refuse to accept either of these solutions because
> > they don't want to do a second DNS lookup for the server's addresses
> > when the addresses are not included in the initial response.
> 
> someone should point out to the browser vendors that this is technically 
> already the case when CNAMES pointing to a different domain and the 
> destination of the CNAME easily can be another CNAME pointing somewhere else

They have been but they refuse to listen.  Recursive servers marshal
answers with cnames.
 
> makes sense when different companies are involved for a lot of records 
> and each one wants a single entry for easier future changes instead 
> touch 50 or more
> 
> well, not the browser itself but the involved DNS servers and i don't 
> see how that's different for the total response time since all that 
> stuff is also cached in the whole dns chain

You add extra rtt between browsers and the recursive server when the
additional section is not populated.

> _______________________________________________
> Please visit https://lists.isc.org/mailman/listinfo/bind-users to unsubscribe from this list
> 
> bind-users mailing list
> bind-users at lists.isc.org
> https://lists.isc.org/mailman/listinfo/bind-users
-- 
Mark Andrews, ISC
1 Seymour St., Dundas Valley, NSW 2117, Australia
PHONE: +61 2 9871 4742                 INTERNET: marka at isc.org


More information about the bind-users mailing list