From owner-freebsd-questions@freebsd.org Wed May 30 14:31:22 2018 Return-Path: Delivered-To: freebsd-questions@mailman.ysv.freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2610:1c1:1:606c::19:1]) by mailman.ysv.freebsd.org (Postfix) with ESMTP id 57347F70EFB for ; Wed, 30 May 2018 14:31:22 +0000 (UTC) (envelope-from byrnejb@harte-lyne.ca) Received: from inet08.hamilton.harte-lyne.ca (inet08.hamilton.harte-lyne.ca [216.185.71.28]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (Client CN "inet08.hamilton.harte-lyne.ca", Issuer "CA_HLL_ISSUER_2016" (not verified)) by mx1.freebsd.org (Postfix) with ESMTPS id 014BA85F56 for ; Wed, 30 May 2018 14:31:21 +0000 (UTC) (envelope-from byrnejb@harte-lyne.ca) Received: from localhost (localhost [127.0.0.1]) by inet08.hamilton.harte-lyne.ca (Postfix) with ESMTP id 8C0E162568 for ; Wed, 30 May 2018 10:31:14 -0400 (EDT) X-Virus-Scanned: amavisd-new at harte-lyne.ca Received: from inet08.hamilton.harte-lyne.ca ([127.0.0.1]) by localhost (inet08.hamilton.harte-lyne.ca [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id xlLcF-NHjG5Z for ; Wed, 30 May 2018 10:31:12 -0400 (EDT) Received: from webmail.harte-lyne.ca (inet04.hamilton.harte-lyne.ca [216.185.71.24]) (using TLSv1 with cipher ECDHE-RSA-AES256-SHA (256/256 bits)) (Client did not present a certificate) by inet08.hamilton.harte-lyne.ca (Postfix) with ESMTPSA id DECB062440 for ; Wed, 30 May 2018 10:31:11 -0400 (EDT) Received: from 216.185.71.44 (SquirrelMail authenticated user byrnejb_hll) by webmail.harte-lyne.ca with HTTP; Wed, 30 May 2018 10:31:11 -0400 Message-ID: Date: Wed, 30 May 2018 10:31:11 -0400 Subject: Why is ntp listening on IP address 127.0.31.1 From: "James B. Byrne" To: freebsd-questions@freebsd.org Reply-To: byrnejb@harte-lyne.ca User-Agent: SquirrelMail/1.4.22-5.el6 MIME-Version: 1.0 Content-Type: text/plain;charset=iso-8859-1 Content-Transfer-Encoding: 8bit X-Priority: 3 (Normal) Importance: Normal X-BeenThere: freebsd-questions@freebsd.org X-Mailman-Version: 2.1.26 Precedence: list List-Id: User questions List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Wed, 30 May 2018 14:31:22 -0000 I have a FreeBSD Bhyve guest that has in its /etc/rc.conf file the following: . . . cloned_interfaces="lo1 lo2" ipv4_addrs_lo1="127.0.31.1/32" ipv4_addrs_lo2="127.0.32.1/32" . . . On the same host I have /etc/ntp.conf configured to listen on specific addresses: interface ignore wildcard interface listen 127.0.0.1 interface listen 192.168.216.18 But following a reboot I discovered this using netstat: udp4 0 0 127.0.0.1.123 *.* udp4 0 0 127.0.31.1.123 *.* udp4 0 0 127.0.32.1.123 *.* udp4 0 0 192.168.216.18.123 *.* udp4 0 0 216.185.71.18.123 *.* Why is ntpd listening on the cloned loopback interfaces? -- *** e-Mail is NOT a SECURE channel *** Do NOT transmit sensitive data via e-Mail Do NOT open attachments nor follow links sent by e-Mail James B. Byrne mailto:ByrneJB@Harte-Lyne.ca Harte & Lyne Limited http://www.harte-lyne.ca 9 Brockley Drive vox: +1 905 561 1241 Hamilton, Ontario fax: +1 905 561 0757 Canada L8E 3C3