On 03/21/2016 04:24 PM, Simon Leinen wrote:
> While the routing issue certainly isn't an Emacs problem, it would be
> nice if Emacs would notice the issue and quickly fall back to IPv4, as
> per the recommendations in RFC 6555.

Do you know how firefox does it? If they just do what's in RFC 6555, then I'll open a feature request on Emacs' tracker.

Clément.