From owner-freebsd-current Sat May 31 12:42:00 1997 Return-Path: Received: (from root@localhost) by hub.freebsd.org (8.8.5/8.8.5) id MAA08955 for current-outgoing; Sat, 31 May 1997 12:42:00 -0700 (PDT) Received: from mail.webspan.net (root@mail.webspan.net [206.154.70.7]) by hub.freebsd.org (8.8.5/8.8.5) with ESMTP id MAA08921 for ; Sat, 31 May 1997 12:41:54 -0700 (PDT) Received: from orion.webspan.net (orion.webspan.net [206.154.70.5]) by mail.webspan.net (8.8.5/8.8.5) with ESMTP id PAA24695; Sat, 31 May 1997 15:41:52 -0400 (EDT) Received: from orion.webspan.net (localhost [127.0.0.1]) by orion.webspan.net (WEBSPN/970116) with ESMTP id PAA20949; Sat, 31 May 1997 15:41:52 -0400 (EDT) To: Bob Bishop cc: freebsd-current@freefall.FreeBSD.org From: "Gary Palmer" Subject: Re: ctm In-reply-to: Your message of "Sat, 31 May 1997 12:49:24 BST." Date: Sat, 31 May 1997 15:41:52 -0400 Message-ID: <20947.865107712@orion.webspan.net> Sender: owner-current@FreeBSD.ORG X-Loop: FreeBSD.org Precedence: bulk Bob Bishop wrote in message ID : > >15 10.1.1.3 (10.1.1.3) 230 ms 187 ms 187 ms > Eeek! Noone should be advertising a route to 10.x.x.x (see RFC1918). Try > shouting at mci.net I doubt that they are advertising it, just using it internally. You do not need to advertise net10 through BGP to return it as a hop in a traceroute... IMHO, net 10 (and the other 1918 networks) should NOT be visable at all from the rest of the 'net, not even to traceroute. Unfortunately, I've been told that a combination of the NIC being extremely miserly with new IP allocations, and security problems in router/terminal server software is causing more and more systems to be put into RFC1918 address space. The implications are interesting ... I filter my inbound lines to remove illegal src IP addresses (like the 1918 addresses). So what happens when one of those systems on a reserved network sends a reply to path MTU discovery that the packet needs to be fragmented? Gary -- Gary Palmer FreeBSD Core Team Member FreeBSD: Turning PC's into workstations. See http://www.FreeBSD.ORG/ for info