From mboxrd@z Thu Jan 1 00:00:00 1970 Path: news.gmane.org!not-for-mail From: Juliusz Chroboczek Newsgroups: gmane.emacs.bugs Subject: bug#17976: 24.3; url-retrieve-synchronously doesn't fallback to IPv4 Date: Sat, 26 Dec 2015 00:15:44 +0100 Message-ID: <87io3m9l27.wl-jch@pps.univ-paris-diderot.fr> References: <878uo2ogg6.wl-jch@pps.univ-paris-diderot.fr> <87poxu2rpn.fsf@gnus.org> <83si2qjm37.fsf@gnu.org> <87twn61cg6.fsf@gnus.org> <87twn6z0gj.fsf@gnus.org> NNTP-Posting-Host: plane.gmane.org Mime-Version: 1.0 (generated by SEMI-EPG 1.14.7 - "Harue") Content-Type: text/plain; charset=US-ASCII X-Trace: ger.gmane.org 1451085382 17969 80.91.229.3 (25 Dec 2015 23:16:22 GMT) X-Complaints-To: usenet@ger.gmane.org NNTP-Posting-Date: Fri, 25 Dec 2015 23:16:22 +0000 (UTC) Cc: 17976@debbugs.gnu.org, Andreas Schwab To: Lars Ingebrigtsen Original-X-From: bug-gnu-emacs-bounces+geb-bug-gnu-emacs=m.gmane.org@gnu.org Sat Dec 26 00:16:10 2015 Return-path: Envelope-to: geb-bug-gnu-emacs@m.gmane.org Original-Received: from lists.gnu.org ([208.118.235.17]) by plane.gmane.org with esmtp (Exim 4.69) (envelope-from ) id 1aCbaj-0004dq-FR for geb-bug-gnu-emacs@m.gmane.org; Sat, 26 Dec 2015 00:16:09 +0100 Original-Received: from localhost ([::1]:36797 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1aCbai-0008SU-TN for geb-bug-gnu-emacs@m.gmane.org; Fri, 25 Dec 2015 18:16:08 -0500 Original-Received: from eggs.gnu.org ([2001:4830:134:3::10]:45846) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1aCbag-0008RG-1K for bug-gnu-emacs@gnu.org; Fri, 25 Dec 2015 18:16:06 -0500 Original-Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1aCbac-0001s6-Nn for bug-gnu-emacs@gnu.org; Fri, 25 Dec 2015 18:16:05 -0500 Original-Received: from debbugs.gnu.org ([208.118.235.43]:56655) by eggs.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1aCbac-0001s1-K5 for bug-gnu-emacs@gnu.org; Fri, 25 Dec 2015 18:16:02 -0500 Original-Received: from Debian-debbugs by debbugs.gnu.org with local (Exim 4.84) (envelope-from ) id 1aCbac-0006Ex-Gc for bug-gnu-emacs@gnu.org; Fri, 25 Dec 2015 18:16:02 -0500 X-Loop: help-debbugs@gnu.org Resent-From: Juliusz Chroboczek Original-Sender: "Debbugs-submit" Resent-CC: bug-gnu-emacs@gnu.org Resent-Date: Fri, 25 Dec 2015 23:16:02 +0000 Resent-Message-ID: Resent-Sender: help-debbugs@gnu.org X-GNU-PR-Message: followup 17976 X-GNU-PR-Package: emacs X-GNU-PR-Keywords: confirmed Original-Received: via spool by 17976-submit@debbugs.gnu.org id=B17976.145108534923211 (code B ref 17976); Fri, 25 Dec 2015 23:16:02 +0000 Original-Received: (at 17976) by debbugs.gnu.org; 25 Dec 2015 23:15:49 +0000 Original-Received: from localhost ([127.0.0.1]:36024 helo=debbugs.gnu.org) by debbugs.gnu.org with esmtp (Exim 4.84) (envelope-from ) id 1aCbaP-000626-G1 for submit@debbugs.gnu.org; Fri, 25 Dec 2015 18:15:49 -0500 Original-Received: from korolev.univ-paris7.fr ([194.254.61.138]:47493) by debbugs.gnu.org with esmtp (Exim 4.84) (envelope-from ) id 1aCbaO-000606-AX for 17976@debbugs.gnu.org; Fri, 25 Dec 2015 18:15:48 -0500 Original-Received: from mailhub.math.univ-paris-diderot.fr (mailhub.math.univ-paris-diderot.fr [81.194.30.253]) by korolev.univ-paris7.fr (8.14.4/8.14.4/relay1/56228) with ESMTP id tBPNFjSK014105; Sat, 26 Dec 2015 00:15:46 +0100 Original-Received: from mailhub.math.univ-paris-diderot.fr (localhost [127.0.0.1]) by mailhub.math.univ-paris-diderot.fr (Postfix) with ESMTP id 73CF861FA2; Sat, 26 Dec 2015 00:15:45 +0100 (CET) X-Virus-Scanned: amavisd-new at math.univ-paris-diderot.fr Original-Received: from mailhub.math.univ-paris-diderot.fr ([127.0.0.1]) by mailhub.math.univ-paris-diderot.fr (mailhub.math.univ-paris-diderot.fr [127.0.0.1]) (amavisd-new, port 10023) with ESMTP id iFMld4V6NZVX; Sat, 26 Dec 2015 00:15:44 +0100 (CET) Original-Received: from ijon.pps.univ-paris-diderot.fr (dra38-1-82-225-44-56.fbx.proxad.net [82.225.44.56]) (Authenticated sender: jch) by mailhub.math.univ-paris-diderot.fr (Postfix) with ESMTPSA id A9DC361FA1; Sat, 26 Dec 2015 00:15:43 +0100 (CET) In-Reply-To: <87twn6z0gj.fsf@gnus.org> User-Agent: Wanderlust/2.15.9 X-Greylist: Sender IP whitelisted, not delayed by milter-greylist-4.2.7 (korolev.univ-paris7.fr [194.254.61.138]); Sat, 26 Dec 2015 00:15:47 +0100 (CET) X-Miltered: at korolev with ID 567DCE21.000 by Joe's j-chkmail (http : // j-chkmail dot ensmp dot fr)! X-j-chkmail-Enveloppe: 567DCE21.000 from mailhub.math.univ-paris-diderot.fr/mailhub.math.univ-paris-diderot.fr/null/mailhub.math.univ-paris-diderot.fr/ X-j-chkmail-Score: MSGID : 567DCE21.000 on korolev.univ-paris7.fr : j-chkmail score : . : R=. U=. O=. B=0.000 -> S=0.000 X-j-chkmail-Status: Ham X-BeenThere: debbugs-submit@debbugs.gnu.org X-Mailman-Version: 2.1.18 Precedence: list X-detected-operating-system: by eggs.gnu.org: GNU/Linux 2.2.x-3.x [generic] X-Received-From: 208.118.235.43 X-BeenThere: bug-gnu-emacs@gnu.org List-Id: "Bug reports for GNU Emacs, the Swiss army knife of text editors" List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: bug-gnu-emacs-bounces+geb-bug-gnu-emacs=m.gmane.org@gnu.org Original-Sender: bug-gnu-emacs-bounces+geb-bug-gnu-emacs=m.gmane.org@gnu.org Xref: news.gmane.org gmane.emacs.bugs:110505 Archived-At: >> This is independent of IPv6. A hostname could also resolve to multiple >> IPv4 addresses where only one of them is (currently) reachable. Please hear this man. > But how does this work in practice? How are we doing name resolution? > Do we have access to all the IP addresses? Do we have access to the > IPv6 addresses without... doing stuff? :-) If we don't, it's a bug that must be fixed. The multihoming techniques that are being developed at IETF right now rely on giving multiple addresses to a single host (and implementing a routing infrastructure to match), we really need to be trying them all. -- Juliusz