From owner-freebsd-questions@FreeBSD.ORG Fri Aug 10 13:38:55 2012 Return-Path: Delivered-To: freebsd-questions@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:4f8:fff6::34]) by hub.freebsd.org (Postfix) with ESMTP id 7B124106566B for ; Fri, 10 Aug 2012 13:38:55 +0000 (UTC) (envelope-from rosettas@gmail.com) Received: from mail-ob0-f182.google.com (mail-ob0-f182.google.com [209.85.214.182]) by mx1.freebsd.org (Postfix) with ESMTP id 447D28FC20 for ; Fri, 10 Aug 2012 13:38:55 +0000 (UTC) Received: by obbun3 with SMTP id un3so3021567obb.13 for ; Fri, 10 Aug 2012 06:38:54 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20120113; h=mime-version:date:message-id:subject:from:to:content-type; bh=5D85Z64Lva7JpAFql3P4P2onTiQXqvM413qkkCerGqM=; b=gC+MAmUzrjIubQPaeCmL5ihGCg8zB79fLQtV9xGZ8GgvHsdqy6ioC3hMNSqzwDf53V kH9I3yU1JmE6BgE0XJ4Amw7tSvMhm57XHSYzpolJdnTTZ7lJGSTkmMxX9T86eDSnEVwE 4CKdlaivz1BRFpwKB/8pRKK98q1pWWmIzBJzpq17pNK6QyrGhUZb2YN0I5bukzJOI4P0 mW6K+ZwoOnS8wRNhcz9YrKfyfq6GqKVy83jbufS2q+5O9TeE3/XZGe5cMV8qIiylE3M3 UR/dLfBrvo99QWXKBxh7mx8fdSBvILxRwfnD13Yoi8fXnC2OOVHu3bTcy2UM+BU9dWgM AvXw== MIME-Version: 1.0 Received: by 10.60.172.143 with SMTP id bc15mr4028431oec.73.1344605934591; Fri, 10 Aug 2012 06:38:54 -0700 (PDT) Received: by 10.76.119.237 with HTTP; Fri, 10 Aug 2012 06:38:54 -0700 (PDT) Date: Fri, 10 Aug 2012 15:38:54 +0200 Message-ID: From: Cos To: freebsd-questions@freebsd.org Content-Type: text/plain; charset=ISO-8859-1 Subject: How to refresh network card buffer? X-BeenThere: freebsd-questions@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: User questions List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Fri, 10 Aug 2012 13:38:55 -0000 Hi all The background is I have around 100pcs router-like products. they all have a fixed IP address 192.168.1.100 and of course different MAC address. I need to connect them one by one to configure. The trouble is while I disconnect one unit and change to another unit, the FreeBSD can not recognize the unit immediately. It need around more than 10 minutes to ping 192.168.1.200 successfully. I can refresh it by "ifconfig ue0 down" and "ifconfig ue0 up", it works but I think the way is not smart. I guess there is something like buffer to record IP and MAC pair has to be cleaned. Could anybody advise? -- with kind regards