From owner-freebsd-net@freebsd.org Tue May 10 07:27:03 2016 Return-Path: Delivered-To: freebsd-net@mailman.ysv.freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:1900:2254:206a::19:1]) by mailman.ysv.freebsd.org (Postfix) with ESMTP id BF519B35C6F for ; Tue, 10 May 2016 07:27:03 +0000 (UTC) (envelope-from trtrmitya@gmail.com) Received: from mail-lf0-x22e.google.com (mail-lf0-x22e.google.com [IPv6:2a00:1450:4010:c07::22e]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (Client CN "smtp.gmail.com", Issuer "Google Internet Authority G2" (verified OK)) by mx1.freebsd.org (Postfix) with ESMTPS id 475D81106 for ; Tue, 10 May 2016 07:27:03 +0000 (UTC) (envelope-from trtrmitya@gmail.com) Received: by mail-lf0-x22e.google.com with SMTP id u64so4748191lff.3 for ; Tue, 10 May 2016 00:27:03 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20120113; h=from:content-transfer-encoding:subject:message-id:date:to :mime-version; bh=SkO7pccfHfn0ykBH1HYDFGu9EoKUNEnI67v0rFuBRd0=; b=DbCpD68Jbf83OVVB/B78YmuyryoDvD6cYnf0B6bur6tSAMHVzDbFBB5BzoIAm/tzsX hDflZvyUwbm0PDmf38ctbd6L9d1i1JE/AmQkib1XdGXNaFjD1FYYi6psxUl13ycVdiKL V5UaB1pZSloDPRi5ePXWznqfX5Tb+bVpjsYYS8z5gL7OHz24JRqsB3dOHJ2Guldtk5gD eDSGaXQz8sOORRVpQy/sj57OAhHYe1oFrk+cEvfGjBB0Fo5w13qxv/rJ6o/niYdWYS76 NKArU+IyIouFlkKh21WqEgYXIt1DnY2AFBEC0y7x6A1d+NqNbgm8GY2L12V+A8mYaDpx lw+Q== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20130820; h=x-gm-message-state:from:content-transfer-encoding:subject :message-id:date:to:mime-version; bh=SkO7pccfHfn0ykBH1HYDFGu9EoKUNEnI67v0rFuBRd0=; b=huwBO3XFoSi6/sr4oF0wyXuILZP9F7LfcPsay9U+p7suWKSx4xjTPyvYrQc+/p/IMb TJt8AglX1RLCypV70VhOmc3L0dXfO5E1XscGbMG7qHazc/TtrpSPzM0Qpp6vuPen7dcl O0miPdzElax5G/yeJU/buoPbe+LE34PbAg0uvaDRbvhDI0g03GpIXsgPW8D7Cn6OoEzH 6wRLxeE9e2kahsaA4rvMk04nSabKWogs+m7vsJN5r2s1z5XACGdX4InYau9Ucpv3O1kU Ciq8xHAQAIM7KnantumUT5+U9S3YyuB7mc44i8rTk0PIN8IZFZ6g0BnV4tgclMPdBL1R /rsg== X-Gm-Message-State: AOPr4FW4e/vLHXRGDJipER8KVPNlZlOkEuYFmbCQZqvVnRqYBCH5+AfEFwxFxp2XoUhH5w== X-Received: by 10.112.140.3 with SMTP id rc3mr16216059lbb.85.1462865221164; Tue, 10 May 2016 00:27:01 -0700 (PDT) Received: from 95.108.172.115-red.dhcp.yndx.net (95.108.172.115-red.dhcp.yndx.net. [95.108.172.115]) by smtp.gmail.com with ESMTPSA id cv11sm132418lbb.49.2016.05.10.00.27.00 for (version=TLSv1/SSLv3 cipher=OTHER); Tue, 10 May 2016 00:27:00 -0700 (PDT) From: Dmitry Sivachenko Content-Type: text/plain; charset=us-ascii Content-Transfer-Encoding: 7bit Subject: ping6: failed to get receiving hop limit Message-Id: Date: Tue, 10 May 2016 10:26:59 +0300 To: FreeBSD Net Mime-Version: 1.0 (Mac OS X Mail 9.3 \(3124\)) X-Mailer: Apple Mail (2.3124) X-BeenThere: freebsd-net@freebsd.org X-Mailman-Version: 2.1.22 Precedence: list List-Id: Networking and TCP/IP with FreeBSD List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Tue, 10 May 2016 07:27:03 -0000 Hello, Sometimes ping6 command writes the following warning to stderr: ping6: failed to get receiving hop limit I can easily reproduce this with for n in `jot - 1 1000` ; do /sbin/ping6 -n -c 5 $HOST > /dev/null ; done It is very likely that even 100 repetitions is enough to catch this. Other than this warning IPv6 network seems to work properly. What does it mean? Thanks.