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Re: getaddrinfo address ordering [Re: IPv6 transition architecture discussion]
>These help quite a bit, but I guess adding some getaddrinfo hint like
>AI_PREFERV4 or AI_PREFERV6 could be added in the case that DNS lookup
>returns both addresses, you use AF_UNSPEC and you want to influence the
>default DNS record ordering.
i don't think it wise to have flag bit - if you pass AI_PREFERV4
you will stuck with IPv4 even when IPv6 provides much better
connectivity, and the curse won't go away until you recompile.
leave it to default address selection rule and logic in getaddrinfo(3).