From owner-freebsd-questions Mon Nov 5 12:46:38 2001 Delivered-To: freebsd-questions@freebsd.org Received: from tomts13-srv.bellnexxia.net (tomts13.bellnexxia.net [209.226.175.34]) by hub.freebsd.org (Postfix) with ESMTP id 4B0B037B418 for ; Mon, 5 Nov 2001 12:46:36 -0800 (PST) Received: from johnny2k ([64.229.43.44]) by tomts13-srv.bellnexxia.net (InterMail vM.4.01.03.16 201-229-121-116-20010115) with SMTP id <20011105204630.IXLC21717.tomts13-srv.bellnexxia.net@johnny2k> for ; Mon, 5 Nov 2001 15:46:30 -0500 Message-ID: <002101c1663b$c61e9080$0a00000a@johnny2k> From: "John" To: Subject: Duplicate localhost IP's on a network ? Date: Mon, 5 Nov 2001 15:52:25 -0500 MIME-Version: 1.0 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: 7bit X-Priority: 3 X-MSMail-Priority: Normal X-Mailer: Microsoft Outlook Express 5.50.4522.1200 X-MimeOLE: Produced By Microsoft MimeOLE V5.50.4522.1200 Sender: owner-freebsd-questions@FreeBSD.ORG Precedence: bulk List-ID: List-Archive: (Web Archive) List-Help: (List Instructions) List-Subscribe: List-Unsubscribe: X-Loop: FreeBSD.ORG On a dual homed 3.4-RELEASE FreeBSD firewall I'm suddenly getting: "/kernel: arp: 00:c0:4f:68:71:8e is using my IP address 127.0.0.1!" The 2 internal cards macs are set as ether 00:d0:b7:85:bb:ce and 00:d0:b7:85:bd:84 I didn't think the localhost address could get loose on the network ? How do I find the offending box in a mixed Macintosh/Pc network of 60 systems, switches and network printers ? What method can I use to scan the network for MAC addresses mapped to IP addresses in hopes the system also has a regular IP address running ? Thanks, John. To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-questions" in the body of the message