From mboxrd@z Thu Jan 1 00:00:00 1970 Path: news.gmane.org!not-for-mail From: =?UTF-8?Q?Cl=c3=a9ment_Pit--Claudel?= Newsgroups: gmane.emacs.devel Subject: Re: Emacs can't reach dx.doi.org? Date: Mon, 21 Mar 2016 16:48:52 -0400 Message-ID: <56F05E34.2030106@gmail.com> References: <56EC89A2.30904@gmail.com> <56F0524B.8020706@gmail.com> NNTP-Posting-Host: plane.gmane.org Mime-Version: 1.0 Content-Type: multipart/signed; micalg=pgp-sha1; protocol="application/pgp-signature"; boundary="1OAMKoK1RwIRglJgx8wvcEAWmuRwAaIfx" X-Trace: ger.gmane.org 1458594503 1656 80.91.229.3 (21 Mar 2016 21:08:23 GMT) X-Complaints-To: usenet@ger.gmane.org NNTP-Posting-Date: Mon, 21 Mar 2016 21:08:23 +0000 (UTC) Cc: Andreas Schwab , Emacs developers To: Simon Leinen Original-X-From: emacs-devel-bounces+ged-emacs-devel=m.gmane.org@gnu.org Mon Mar 21 22:08:12 2016 Return-path: Envelope-to: ged-emacs-devel@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 1ai73c-0002kU-39 for ged-emacs-devel@m.gmane.org; Mon, 21 Mar 2016 22:08:12 +0100 Original-Received: from localhost ([::1]:60486 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1ai73b-0000Nf-9w for ged-emacs-devel@m.gmane.org; Mon, 21 Mar 2016 17:08:11 -0400 Original-Received: from eggs.gnu.org ([2001:4830:134:3::10]:49775) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1ai6l1-0000dG-Iv for emacs-devel@gnu.org; Mon, 21 Mar 2016 16:49:00 -0400 Original-Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1ai6ky-0001vM-DH for emacs-devel@gnu.org; Mon, 21 Mar 2016 16:48:59 -0400 Original-Received: from mout.kundenserver.de ([217.72.192.73]:64418) by eggs.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1ai6ky-0001vG-3V for emacs-devel@gnu.org; Mon, 21 Mar 2016 16:48:56 -0400 Original-Received: from [18.26.2.123] ([18.26.2.123]) by mrelayeu.kundenserver.de (mreue101) with ESMTPSA (Nemesis) id 0MXYog-1aEtyl3yq6-00WYs3; Mon, 21 Mar 2016 21:48:54 +0100 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:38.0) Gecko/20100101 Thunderbird/38.6.0 In-Reply-To: X-Provags-ID: V03:K0:3rvZCRsyCNQFE+VLncmtLScw9ZA9hLk2DlhL9UQ1Krr+YkVKUbY jsPJU1oiHTGsbulq0YAHwNunLV4qdbvg1r5k4cF8G+D757MfdbpHa+4XGw0Er3fEb1sA4KT kFP2zKWImqbn/xTXihgIZqJkTkDwzZHCeXcMAuBBury/fP6ARNi5UKxa0RvGbNiKFTZ3Sfp n7PX/C1k3YN6KJj1lgftQ== X-UI-Out-Filterresults: notjunk:1;V01:K0:iXf4bDYK+kQ=:swVubqZwp+MRbwQ/+wk+Jd 82KrrPnMpKiK1eMtFo3cCwVhrn7tBAHVokuMjpaf0Jtn/hE5JNNgPFQXqLOQZbOLvjYvEtrvi FY9l/tjLvfm08rBROcijahLOFqLokqZq3nJaN6WdQP5hBdnhQmgnXUu3AucwZFG9OXOjwdHBQ 4m9Y5cRW0fZrGH2jetVbTB5VvBCO28Hx4u6tG1Tk0KzDlhIuzi9kNGGqndsyTLreZvIRooFAI ifsmySVzQDZTdDuFfbijwhgr9iD5M6kbUEhWSuBDxHFPib3YIEYaVcq3CFpfQZ6EgfL3YPFL2 DM/A12WXF30hw414/qwKqL+EPy/9VwPBHegXVfWObwfjtegmLjslElJYpPZ6L//ds7Iqfuyla 2SsbY4Ns9a6W21ZboJEHIxuvbZ+iXtVoteE1yUlwCtAEX4RdFNyhLtbhWAT7Z6+QruZVpLcFt fsZcDP8VMCN/AHZTBUPnSaHpicx+d9Je+d5Lc8ugyXbz+Sh+qMO75HU0QCEgCbK6YCZo6TiC4 wTe1q5DotzVKArE5qhq+24QTCOMb6pcm3p5K2d0cdUTghw7kD6rhzlie5XJIDQ3gVxaDsOgig S5rbGkYdoVMSKbr/Q/J2tpjehxC19QIBy4LQ2v6J7frRGvV7np+84l+WJeQrsKLF0y+HWUZYX Hmf+woDOL7AXuYxsvWjgnSJwwwy0dOxST9k0IMceKqMQsJbAPqnwtFLJgDYzCUrlYsBk= X-detected-operating-system: by eggs.gnu.org: GNU/Linux 2.2.x-3.x [generic] X-Received-From: 217.72.192.73 X-BeenThere: emacs-devel@gnu.org X-Mailman-Version: 2.1.14 Precedence: list List-Id: "Emacs development discussions." List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: emacs-devel-bounces+ged-emacs-devel=m.gmane.org@gnu.org Original-Sender: emacs-devel-bounces+ged-emacs-devel=m.gmane.org@gnu.org Xref: news.gmane.org gmane.emacs.devel:202036 Archived-At: This is an OpenPGP/MIME signed message (RFC 4880 and 3156) --1OAMKoK1RwIRglJgx8wvcEAWmuRwAaIfx Content-Type: multipart/mixed; boundary="iWQkKK63oCtoQ3PeboaJdLxL8TD6uvh8G" From: =?UTF-8?Q?Cl=c3=a9ment_Pit--Claudel?= To: Simon Leinen Cc: Andreas Schwab , Emacs developers Message-ID: <56F05E34.2030106@gmail.com> Subject: Re: Emacs can't reach dx.doi.org? References: <56EC89A2.30904@gmail.com> <56F0524B.8020706@gmail.com> In-Reply-To: --iWQkKK63oCtoQ3PeboaJdLxL8TD6uvh8G Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: quoted-printable On 03/21/2016 04:24 PM, Simon Leinen wrote: > Works from here: Thanks for testing! >> Is there anything I can do on my side to diagnose this? >=20 > traceroute/traceroute6? >=20 > You seem to have a public IPv6 address and/or an IPv6 default route, > because otherwise telnet and other programs wouldn't try to connect > over IPv6.=20 Indeed, I'm on MIT CSAIL's network. > But maybe your IPv6 connectivity is broken/blocked by > firewall/nonexistent. Or, if IPv6 generally works for you, there may > be a routing problem further "upstream". As I said, traceroute{,6} > might help. What is your IPv6 address? There are some IPv6 peering > issues/disputes that may cause disconnectivity between some parts of > the IPv6 Internet, maybe you are being hit by this. I see dx.doi.org > behind Cogent, who are involved in these disputes. Interesting, thanks for the background info! I'm raising the issue with M= IT's network admins. > 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. I assume IPv4 works for you? > i.e. telnet -4 dx.doi.org 80 telnet -4 works fine indeed. It also works fine in Firefox. Could Emacs u= se the same tricks as Firefox and fall back? 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