From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mp10.migadu.com ([2001:41d0:8:6d80::]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits)) by ms5.migadu.com with LMTPS id 2DKKM/L+f2KFxgAAbAwnHQ (envelope-from ) for ; Sat, 14 May 2022 21:11:46 +0200 Received: from aspmx1.migadu.com ([2001:41d0:8:6d80::]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits)) by mp10.migadu.com with LMTPS id HB+FMvL+f2KoNgEAG6o9tA (envelope-from ) for ; Sat, 14 May 2022 21:11:46 +0200 Received: from lists.gnu.org (lists.gnu.org [209.51.188.17]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by aspmx1.migadu.com (Postfix) with ESMTPS id 616D79AFE for ; Sat, 14 May 2022 21:11:46 +0200 (CEST) Received: from localhost ([::1]:38686 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1npxB3-0002SW-B9 for larch@yhetil.org; Sat, 14 May 2022 15:11:45 -0400 Received: from eggs.gnu.org ([2001:470:142:3::10]:54280) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1npxAM-0001go-S9 for bug-guix@gnu.org; Sat, 14 May 2022 15:11:02 -0400 Received: from debbugs.gnu.org ([209.51.188.43]:53623) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_128_GCM_SHA256:128) (Exim 4.90_1) (envelope-from ) id 1npxAM-0008Or-JJ for bug-guix@gnu.org; Sat, 14 May 2022 15:11:02 -0400 Received: from Debian-debbugs by debbugs.gnu.org with local (Exim 4.84_2) (envelope-from ) id 1npxAM-0002Ph-EN for bug-guix@gnu.org; Sat, 14 May 2022 15:11:02 -0400 X-Loop: help-debbugs@gnu.org Subject: bug#55335: openssh-service no longer listens on IPv6 Resent-From: Jack Hill Original-Sender: "Debbugs-submit" Resent-CC: bug-guix@gnu.org Resent-Date: Sat, 14 May 2022 19:11:02 +0000 Resent-Message-ID: Resent-Sender: help-debbugs@gnu.org X-GNU-PR-Message: followup 55335 X-GNU-PR-Package: guix X-GNU-PR-Keywords: To: Ludovic =?UTF-8?Q?Court=C3=A8s?= Cc: Christopher Baines , 55335@debbugs.gnu.org Received: via spool by 55335-submit@debbugs.gnu.org id=B55335.16525554049189 (code B ref 55335); Sat, 14 May 2022 19:11:02 +0000 Received: (at 55335) by debbugs.gnu.org; 14 May 2022 19:10:04 +0000 Received: from localhost ([127.0.0.1]:47520 helo=debbugs.gnu.org) by debbugs.gnu.org with esmtp (Exim 4.84_2) (envelope-from ) id 1npx9Q-0002O9-5M for submit@debbugs.gnu.org; Sat, 14 May 2022 15:10:04 -0400 Received: from minsky.hcoop.net ([104.248.1.95]:42418) by debbugs.gnu.org with esmtp (Exim 4.84_2) (envelope-from ) id 1npx9O-0002NW-6W for 55335@debbugs.gnu.org; Sat, 14 May 2022 15:10:02 -0400 Received: from marsh.hcoop.net ([45.55.52.66]) by minsky.hcoop.net with esmtpsa (TLS1.3:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.92) (envelope-from ) id 1npx9H-0002rA-R6; Sat, 14 May 2022 15:09:55 -0400 Date: Sat, 14 May 2022 15:09:55 -0400 (EDT) From: Jack Hill X-X-Sender: jackhill@marsh.hcoop.net In-Reply-To: <87lev4f71w.fsf_-_@gnu.org> Message-ID: References: <87r153q913.fsf@cbaines.net> <20220513142312.21382-1-mail@cbaines.net> <87lev4f71w.fsf_-_@gnu.org> User-Agent: Alpine 2.21 (DEB 202 2017-01-01) MIME-Version: 1.0 Content-Type: multipart/mixed; boundary="925712948-1546090832-1652555395=:11587" X-BeenThere: debbugs-submit@debbugs.gnu.org X-Mailman-Version: 2.1.18 Precedence: list X-BeenThere: bug-guix@gnu.org List-Id: Bug reports for GNU Guix List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: bug-guix-bounces+larch=yhetil.org@gnu.org Sender: "bug-Guix" X-Migadu-Flow: FLOW_IN X-Migadu-To: larch@yhetil.org X-Migadu-Country: US ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=yhetil.org; s=key1; t=1652555506; h=from:from:sender:sender:reply-to:subject:subject:date:date: message-id:message-id:to:to:cc:cc:mime-version:mime-version: content-type:content-type:resent-cc:resent-from:resent-sender: resent-message-id:in-reply-to:in-reply-to:references:references: list-id:list-help:list-unsubscribe:list-subscribe:list-post; bh=lwJC3ZLjEh+K4uJbbV6hxZAIa6IclhGMqcf3GwsLgEY=; b=LihCajJbk12f28unB0/ThMDiTp7m45uafcygU/wzgWoqWArLWZ0O9Eisx7qr26O/bedyXx JJZgyn5jkVHnSgbk8i/DdcDdW6BN7r/PWbef34hnIhMp4MB215fyVH+WOTrzGiosB7qtxF Umv0kqUSxa1ql9de+xdACdRqOrzbnhIe9bgY+oJurNX+9dplSOx32SokT9MFe9UQIEsqzZ kF0+VHmgh5guLlj/XwTTZ+c3P9PnhPhxJXac4EDy09yCdK9Cj4sMboxzxc2EkqWxHVVH3D dl645Vy0z4JeLfP0Oq89xb+MV0Pae7hPbgwntNIjudSfOWyBQscIMUWo5WsRCg== ARC-Seal: i=1; s=key1; d=yhetil.org; t=1652555506; a=rsa-sha256; cv=none; b=mYBgPlj0XE1CQdUHVFUhbpx07lnU61OatzKDI5yoWZo3gbTBQElyQKq0gx9uXkiNgjniwN Tg7y7wHZlYWLgP0qdXoEBnaAgjNJkk8xEOE4T9Bx2pXIEx871ISwR0YEJdLqe/C8xs0g0r oWsEpmCHW3MTys1Oz1hlZTxGfW964oN650MUGIe0MQLd0rmuUt6zZsJKJZtYSFEXWuK/YY WCvBS9mIjLWRMnq6G70xyYVKbXPbgKuJx7E7VrJkIZk4fYkZmUFWHaNATJlJs4QUdGdaKz dmw0spngyxojbJAi8P4Wok0tCtYwI5EAwQ86kUDHlj9jaYvGaOl3NCQwKF1Mbg== ARC-Authentication-Results: i=1; aspmx1.migadu.com; dkim=none; dmarc=none; spf=pass (aspmx1.migadu.com: domain of "bug-guix-bounces+larch=yhetil.org@gnu.org" designates 209.51.188.17 as permitted sender) smtp.mailfrom="bug-guix-bounces+larch=yhetil.org@gnu.org" X-Migadu-Spam-Score: -3.43 Authentication-Results: aspmx1.migadu.com; dkim=none; dmarc=none; spf=pass (aspmx1.migadu.com: domain of "bug-guix-bounces+larch=yhetil.org@gnu.org" designates 209.51.188.17 as permitted sender) smtp.mailfrom="bug-guix-bounces+larch=yhetil.org@gnu.org" X-Migadu-Queue-Id: 616D79AFE X-Spam-Score: -3.43 X-Migadu-Scanner: scn0.migadu.com X-TUID: RUxzcBPcMtfa This message is in MIME format. The first part should be readable text, while the remaining parts are likely unreadable without MIME-aware tools. --925712948-1546090832-1652555395=:11587 Content-Type: text/plain; charset=utf-8; format=flowed Content-Transfer-Encoding: 8BIT On Sat, 14 May 2022, Ludovic Courtès wrote: > Hi, > > Thinking about it, what do you think is the risk of using AF_INET6 > unconditionally? > > AFAICS it just works. Is there a switch somewhere that might affect > that behavior? Yes, I beleive that it's in sysctl: ``` $ sysctl net.ipv6.bindv6only net.ipv6.bindv6only = 0 ``` If enabled, the v6 socket wouldn't work for v4. Disabled is the default on Guix System. I don't know what would happen if v6 were disabled entirely. Hopefully that's not something we have to worry about in 2022. HTH, Jack --925712948-1546090832-1652555395=:11587--