From owner-freebsd-questions Wed Nov 3 9:36:25 1999 Delivered-To: freebsd-questions@freebsd.org Received: from gwdu60.gwdg.de (gwdu60.gwdg.de [134.76.10.60]) by hub.freebsd.org (Postfix) with ESMTP id B656715612 for ; Wed, 3 Nov 1999 09:36:08 -0800 (PST) (envelope-from kheuer@gwdu60.gwdg.de) Received: from localhost (kheuer@localhost) by gwdu60.gwdg.de (8.9.2/8.9.2) with ESMTP id SAA61180 for ; Wed, 3 Nov 1999 18:36:09 +0100 (CET) (envelope-from kheuer@gwdu60.gwdg.de) Date: Wed, 3 Nov 1999 18:36:08 +0100 (CET) From: Konrad Heuer To: freebsd-questions@freebsd.org Subject: Class B Network / Host Not Reachable Message-ID: MIME-Version: 1.0 Content-Type: TEXT/PLAIN; charset=X-UNKNOWN Content-Transfer-Encoding: QUOTED-PRINTABLE Sender: owner-freebsd-questions@FreeBSD.ORG Precedence: bulk X-Loop: FreeBSD.ORG I've encountered the following problem on two different servers (3.1-R and 3.3-R): We've a class B network with proxy arp which I don't use (endless arp moved ... messages within syslog - any idea how to suppress them?); both machines use netmask 255.255.255.0 and a default router to communicate with the world outside the subnet. From time to time, one or two or very few machines outside the class C subnet but inside the class B net are not reachable - traceroute doesn't show any(!) successful hop, and `netstat -r' or `arp -a' don't show anything special with that machines. I will be able to traceroute to `a.b.c.n-1' but not to `a.b.c.n' in such a situation. Adding a static route to the machine, tracing the route and then deleting the static route will be a workaround - the system will stay reachable after that sequence. Any idea why the whole thing happens? Thanks for reading! // // Konrad Heuer ____ ___ _____= __=20 // Gesellschaft f=FCr wissenschaftliche / __/______ ___ / _ )/ __= / _ \ // Datenverarbeitung mbH G=D6ttingen / _// __/ -_) -_) _ |\ \/= // / // Am Fa=DFberg, D-37077 G=D6ttingen /_/ /_/ \__/\__/____/___= /____/=20 // Deutschland (Germany) ----- The Power to Serve ----= - // http://www.freebsd.org // kheuer@gwdu60.gwdg.de // To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-questions" in the body of the message