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On Fri, Jul 13, 2018 at 10:31 PM Rich Felker <dalias@libc.org> wrote:
> Here's a version with the loop. I've tested it now with ::1 removed
> from device lo, but the connect to ::1 still succeeds; I suspect
> presence of a default route for IPv6 makes it work since ::1 is
> "routable" then. Can you confirm that it actually suppresses IPv6 in
> your purely-no-IPv6 environment, as intended?

Works for me.