From owner-freebsd-questions Wed Jun 21 20:54: 1 2000 Delivered-To: freebsd-questions@freebsd.org Received: from emu.prod.itd.earthlink.net (emu.prod.itd.earthlink.net [207.217.121.31]) by hub.freebsd.org (Postfix) with ESMTP id 0F2DE37C152 for ; Wed, 21 Jun 2000 20:53:51 -0700 (PDT) (envelope-from cjc@earthlink.net) Received: from pool0586.cvx20-bradley.dialup.earthlink.net (pool1049.cvx20-bradley.dialup.earthlink.net [209.179.254.29]) by emu.prod.itd.earthlink.net (8.9.3-EL_1_3/8.9.3) with ESMTP id UAA04655 for ; Wed, 21 Jun 2000 20:53:48 -0700 (PDT) Received: (from cjc@localhost) by pool0586.cvx20-bradley.dialup.earthlink.net (8.9.3/8.9.3) id UAA43758 for freebsd-questions@freebsd.org; Wed, 21 Jun 2000 20:52:23 -0700 (PDT) Date: Wed, 21 Jun 2000 20:52:21 -0700 From: "Crist J. Clark" To: freebsd-questions@freebsd.org Subject: Confused by Loopback Message-ID: <20000621205221.A43715@pool0586.cvx20-bradley.dialup.e> Reply-To: cjclark@alum.mit.edu Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii X-Mailer: Mutt 1.0.1i Sender: owner-freebsd-questions@FreeBSD.ORG Precedence: bulk X-Loop: FreeBSD.ORG I think I must be missing something... But I am not sure what. My loopback is configured so, $ ifconfig lo0 lo0: flags=8049 mtu 16384 inet 127.0.0.1 netmask 0xff000000 But if I look at the routing table, $ netstat -rn Routing tables Internet: Destination Gateway Flags Refs Use Netif Expire default 207.217.148.27 UGSc 11 22 tun0 127.0.0.1 127.0.0.1 UH 0 0 lo0 207.217.148.27 209.179.254.29 UH 12 0 tun0 Notice there is no LAN entry for the 127-net like the ifconfig(8) mask says. So if I were to do something silly like, $ ping 127.0.0.2 It goes out over the tun0 interface. I noticed this because for some perverse reason I tried, $ ping 127.255.255.255 And started getting replies from other hosts! I tried a traceroute(8) and watched 127.0.0.2 packets make their happy way out towards the I'net. Tell me I'm missing something silly here. -- Crist J. Clark cjclark@alum.mit.edu To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-questions" in the body of the message