Re: interop problems with getaddrinfo() address selection

Keith Moore <moore@network-heretics.com> Tue, 11 December 2007 18:31 UTC

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Date: Tue, 11 Dec 2007 10:31:38 -0800
From: Keith Moore <moore@network-heretics.com>
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To: Stephane Bortzmeyer <bortzmeyer@nic.fr>
Subject: Re: interop problems with getaddrinfo() address selection
References: <200712062020.PAA16213@Sparkle.Rodents.Montreal.QC.CA> <Pine.LNX.4.64.0712071735070.24448@hermes-1.csi.cam.ac.uk> <475B0ABC.5090806@cs.utk.edu> <Pine.LNX.4.64.0712092000150.29087@hermes-1.csi.cam.ac.uk> <475C5047.3010807@cs.utk.edu> <Pine.LNX.4.64.0712100739410.29087@hermes-1.csi.cam.ac.uk> <200712101815.NAA27674@Sparkle.Rodents.Montreal.QC.CA> <Pine.LNX.4.64.0712101935070.24448@hermes-1.csi.cam.ac.uk> <200712102311.SAA01012@Sparkle.Rodents.Montreal.QC.CA> <475DDAA7.3060308@cs.utk.edu> <20071211094746.GA29759@nic.fr>
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>> on the other hand, if the site is trying to do dynamic
>> load-balancing with DNS by having DNS favor lightly-used servers,
>>     
>
> There is a standard way for a site to do this sort of "DNS
> engineering" and it is SRV (RFC 2782).
Per RFC 2782, SRV only applies to protocols that are specified to use
it.  Even then, it's not clear that SRV is good for dynamic load balancing.

Keith