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Re: [v6ops] An Update to Happy Eyeballs

Gert Doering <gert@space.net> Thu, 23 March 2017 12:07 UTC

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Date: Thu, 23 Mar 2017 13:07:04 +0100
From: Gert Doering <gert@space.net>
To: Brian E Carpenter <brian.e.carpenter@gmail.com>
Cc: Job Snijders <job@instituut.net>, Lorenzo Colitti <lorenzo@google.com>, IPv6 Operations <v6ops@ietf.org>
Message-ID: <20170323120704.GR2367@Space.Net>
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Subject: Re: [v6ops] An Update to Happy Eyeballs
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Hi,

On Thu, Mar 23, 2017 at 11:22:15AM +1300, Brian E Carpenter wrote:
> On 23/03/2017 04:18, Job Snijders wrote:
> > Perhaps of interest to this group:
> > 
> > https://blog.powerdns.com/2014/05/21/a-surprising-discovery-on-converting-ipv6-addresses-we-no-longer-prefer-getaddrinfo/
> 
> What a bizarre idea to use getaddrinfo() for format conversion, when inet_pton() and inet_ntop() exist.

Well, whoever designed that API obviously thought it would be something
clever.  Otherwise, how do you explain AI_NUMERICHOST?

                    AI_NUMERICHOST  If the AI_NUMERICHOST bit is set, it indi-
                                    cates that hostname should be treated as a
                                    numeric string defining an IPv4 or IPv6
                                    address and no name resolution should be
                                    attempted.

Gert Doering
        -- NetMaster
-- 
have you enabled IPv6 on something today...?

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