On Sun, 12 Oct 2014, Peter Wu wrote:

> The cache hack is needed because ENABLE_IPV6 is a macro guard. HAVE_IPV6
> would be a nicer name, but is a more evasive change.

I think I originally went with "enable" just because people can in fact
disable this so it is a matter of enabling the use of IPv6, not just a matter
if you actually have support for it. The HAVE_* defines are usually the latter
kind.

Of course, over time and these days, I think the amount of people who
explicitly disable IPv6 is very small.

I don't think replacing the definition name offers any particular benefit.

-- 
  / daniel.haxx.se
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