We need a facility added to the resolver to filter the addresses
it returns.

I do not have IPv6 connectivity. Until I do, it is pointless for
the apps to try any IPv6 addresses. I need a way to prevent the
DNS resolver (probably with a directive in /etc/resolv.conf) from
returning IPv6 addresses.

One day, there will be IPv6-only sites. They will also need such
a filter facility, to remove IPv4 addresses from the resolver
response.

Comments?

	Erik <fair@netbsd.org>