Re: git-send-email and IPv6-only host

From: Junio C Hamano <gitster@pobox.com>
Date: Aug 28, 2015, 17:19 UTC
Message-ID: <xmqqbndr2uwi.fsf@gitster.mtv.corp.google.com>
In-Reply-To: <20150828041119.GP301234@dakara>

Stéphane Graber <stgraber@stgraber.org> writes:

Show 17 quoted lines

> Hello,
>
> I've recently switched my home network to be IPv6-only, using NAT64 and
> DNS64 to reach IPv4 hosts. Pretty much everything I use day to day just
> kept on working fine, but I keep finding some small problems here and
> there, mostly to do with perl software.
>
> One of those is git-send-email which isn't capable of talking to an IPv6
> SMTP server.
>
> I've locally patched my git-send-email to add:
>
>     require Net::INET6Glue::INET_is_INET6;
>
> This seems to be the magic bullet for all IPv6 problems I've had with
> perl software, though I'm not sure whether this is an acceptable fix
> upstream as this does bring an additional dependency to git-send-email.

I wonder what happens if you 'require' that Glue on a host that is not IPv6-only.

What I am trying to get at is if what that Glue thing does is an acceptable thing to do in the Net::* Perl modules (e.g. Net::SMTP and Net::SMTP::SSL that we use), i.e., what INET6Glue does to work around issues in Net::* is a problem Net::* Perl modules should be solving for the users of these modules.

After all, it is madness to ask all packages that use Net::* infrastructure, like git-send-email, to 'require' an extra module.

Thanks.