From mboxrd@z Thu Jan 1 00:00:00 1970 From: "Seong Moon" Subject: IP, MAC address duplication detection ? Date: Thu, 27 Mar 2003 10:43:21 +0900 Sender: netdev-bounce@oss.sgi.com Message-ID: <003401c2f402$3fbc4450$28acfe81@seong> Mime-Version: 1.0 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: 7bit Return-path: To: Errors-to: netdev-bounce@oss.sgi.com List-Id: netdev.vger.kernel.org Hi, there. In Linux box, How can I detect IP/MAC address duplication? I'm using kernel-2.4.18 but the kernel does not seem to have gratuitous arp implementation. Is it right? I know I can detect IP address duplication by arping program But I want to implment a following mechanism. When the linux machine bootstraps or one of the nework interfaces is assigned a MAC/IP address, the linux box can detect the duplication of newly assigned MAC/IP address. How can I do this ? thanks.