From owner-freebsd-net@FreeBSD.ORG Wed Aug 13 08:43:56 2003 Return-Path: Delivered-To: freebsd-net@freebsd.org Received: from mx1.FreeBSD.org (mx1.freebsd.org [216.136.204.125]) by hub.freebsd.org (Postfix) with ESMTP id 2942437B401 for ; Wed, 13 Aug 2003 08:43:56 -0700 (PDT) Received: from boreas.isi.edu (boreas.isi.edu [128.9.160.161]) by mx1.FreeBSD.org (Postfix) with ESMTP id 9043043F93 for ; Wed, 13 Aug 2003 08:43:55 -0700 (PDT) (envelope-from larse@ISI.EDU) Received: from isi.edu (c-24-130-112-121.we.client2.attbi.com [24.130.112.121]) by boreas.isi.edu (8.11.6p2/8.11.2) with ESMTP id h7DFhsX10485; Wed, 13 Aug 2003 08:43:54 -0700 (PDT) Message-ID: <3F3A5CB7.5070006@isi.edu> Date: Wed, 13 Aug 2003 08:43:51 -0700 From: Lars Eggert Organization: USC Information Sciences Institute User-Agent: Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US; rv:1.5a) Gecko/20030718 X-Accept-Language: en-us, en MIME-Version: 1.0 To: Nick Barnes References: <65626.1060774393@thrush.ravenbrook.com> In-Reply-To: <65626.1060774393@thrush.ravenbrook.com> Content-Type: multipart/signed; protocol="application/x-pkcs7-signature"; micalg=sha1; boundary="------------ms070709090404010406080107" cc: freebsd-net@freebsd.org Subject: Re: Translate MAC address to IP address X-BeenThere: freebsd-net@freebsd.org X-Mailman-Version: 2.1.1 Precedence: list List-Id: Networking and TCP/IP with FreeBSD List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Wed, 13 Aug 2003 15:43:56 -0000 This is a cryptographically signed message in MIME format. --------------ms070709090404010406080107 Content-Type: text/plain; charset=us-ascii; format=flowed Content-Transfer-Encoding: 7bit Nick Barnes wrote: > [-net seems to be the right forum for this.] > > I have some MAC addresses from a local Ethernet segment. I want to > convert them into IP addresses. How can I do that programmatically? net/arping from port: [root@nik: ~] arping -i em1 00:07:e9:0a:23:91 ARPING 00:07:e9:0a:23:91 60 bytes from 128.9.168.57 (00:07:e9:0a:23:91): icmp_seq=0 time=5.453 msec 60 bytes from 128.9.168.57 (00:07:e9:0a:23:91): icmp_seq=1 time=9.980 msec 60 bytes from 128.9.168.57 (00:07:e9:0a:23:91): icmp_seq=2 time=9.981 msec ^C --- 00:07:e9:0a:23:91 statistics --- 3 packets transmitted, 3 packets received, 0% unanswered Lars -- Lars Eggert USC Information Sciences Institute --------------ms070709090404010406080107 Content-Type: application/x-pkcs7-signature; name="smime.p7s" Content-Transfer-Encoding: base64 Content-Disposition: attachment; filename="smime.p7s" Content-Description: S/MIME Cryptographic Signature MIAGCSqGSIb3DQEHAqCAMIACAQExCzAJBgUrDgMCGgUAMIAGCSqGSIb3DQEHAQAAoIIJtjCC AzgwggKhoAMCAQICEGZFcrfMdPXPY3ZFhNAukQEwDQYJKoZIhvcNAQEEBQAwgdExCzAJBgNV BAYTAlpBMRUwEwYDVQQIEwxXZXN0ZXJuIENhcGUxEjAQBgNVBAcTCUNhcGUgVG93bjEaMBgG 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