bug#17976: 24.3; url-retrieve-synchronously doesn't fallback to IPv4

[Lars Ingebrigtsen]

Eli Zaretskii <eliz@gnu.org> writes:

> If by "general network connection" you mean on the C level in
> process.c, then no, I don't think so.  Protocol-specific code is not
> there, it's above that in Lisp.  IMO, url*.el is where this should be
> handled.

I meant in `open-network-stream', so between the C layer and url*.el.

This is probably as relevant for, say, IMAP as it is for HTTP, I would
guess?

But I've never used IPv6.

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