From owner-freebsd-questions Mon Feb 14 13:11:19 2000 Delivered-To: freebsd-questions@freebsd.org Received: from nimitz.ca.sandia.gov (nimitz.ca.sandia.gov [146.246.243.56]) by builder.freebsd.org (Postfix) with ESMTP id 99C1E3E7A for ; Mon, 14 Feb 2000 13:11:16 -0800 (PST) Received: (from bmah@localhost) by nimitz.ca.sandia.gov (8.9.3/8.9.3) id NAA15007; Mon, 14 Feb 2000 13:11:17 -0800 (PST) Message-Id: <200002142111.NAA15007@nimitz.ca.sandia.gov> X-Mailer: exmh version 2.1.1-cvs 10/15/1999 To: Tony Wells Cc: freebsd-questions@FreeBSD.ORG Subject: Re: traceroute question In-Reply-To: <38A85721.D8711D1D@journalstar.com> References: <38A85721.D8711D1D@journalstar.com> Comments: In-reply-to Tony Wells message dated "Mon, 14 Feb 2000 13:27:29 -0600." From: bmah@CA.Sandia.GOV (Bruce A. Mah) Reply-To: bmah@CA.Sandia.GOV X-Face: g~c`.{#4q0"(V*b#g[i~rXgm*w;:nMfz%_RZLma)UgGN&=j`5vXoU^@n5v4:OO)c["!w)nD/!!~e4Sj7LiT'6*wZ83454H""lb{CC%T37O!!'S$S&D}sem7I[A 2V%N&+ X-Url: http://www.ca.sandia.gov/~bmah/ Mime-Version: 1.0 Content-Type: multipart/signed; boundary="==_Exmh_-1757363394P"; micalg=pgp-sha1; protocol="application/pgp-signature" Content-Transfer-Encoding: 7bit Date: Mon, 14 Feb 2000 13:11:17 -0800 Sender: owner-freebsd-questions@FreeBSD.ORG Precedence: bulk X-Loop: FreeBSD.ORG --==_Exmh_-1757363394P Content-Type: text/plain; charset=us-ascii If memory serves me right, Tony Wells wrote: > I have a machine I'm having a problem getting to. When I do a > traceroute the machines a hop or two away from the target return the > times are followed by a '!N'. I checked the man page for traceroute > and it says that this means 'ICMP unreachable code N'. > > I guess what I'm looking for is a clarification of what exactly 'ICMP > unreachable code N' means. Take a look at /usr/include/netinet/ip_icmp.h. As ou look through the file, you'll see some #define statements for macros beginning with the words "ICMP_UNREACH_". Those are the ICMP unreachable code values, and the comments in each line give a rather terse explanation of what each code value signifies. For more information, you can consult RFC 792 from the IETF web site: http://www.ietf.org/ Hope this helps, Bruce. --==_Exmh_-1757363394P Content-Type: application/pgp-signature -----BEGIN PGP SIGNATURE----- Version: PGPfreeware 5.0i for non-commercial use MessageID: RqZJprzoxk4tljZdq+L/ZVLI8FvgWat4 iQA/AwUBOKhvddjKMXFboFLDEQKkuwCdEavAavXS5cgShIS+enAEkIUWdkIAn3rW 9Yxvg2PFoArjQ3JUU2Bg1L5R =L/Uq -----END PGP SIGNATURE----- --==_Exmh_-1757363394P-- To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-questions" in the body of the message