Date: Sun, 26 Aug 2001 13:03:47 -0400 From: Brian Reichert <reichert@numachi.com> To: Harry Putnam <reader@newsguy.com> Cc: freebsd-mobile@FreeBSD.ORG Subject: Re: Frustrating network problem - need diagnotic help Message-ID: <20010826130347.A81961@numachi.com> In-Reply-To: <m1lmk79b8l.fsf@reader.newsguy.com>; from reader@newsguy.com on Sun, Aug 26, 2001 at 06:55:38AM -0700 References: <m1snefa17h.fsf@reader.newsguy.com> <20010826014336.Y81961@numachi.com> <m1lmk79b8l.fsf@reader.newsguy.com>
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On Sun, Aug 26, 2001 at 06:55:38AM -0700, Harry Putnam wrote: > How does one tell if it is a bogus MAC address? I initially had to cheat, and look at how Windows probed that card, for in that OS, it worked. Ultimately, I researched the fields of the MAC address and found that: - From your supplied URL, the vendor is [Toshiba America] [3COM/NoteWorthy 56K Modem] Comparing the first three bytes or your MAC 01:d4:ff:03:00:20 against any MAC vendor list implies a mismatch: <http://map-ne.com/Ethernet/vendor.html> <http://standards.ieee.org/regauth/ethertype/type-pub.html> - Although, for the life of me I can't reaconstruct the research, I recall learning that that list bit of the MAC address must be '1', otherwise, it's interpreted as a multicast address. (Which only makes sense in a destination address, not a source address, which it what your card's MAC will be used for.) > What do you mean by > `certain' above? There were some tcp connections you could not make? I whined to -mobile and -isp, with some feedback. Look for these subjects: 'linksys vs cisco' 'LinkSys NP100 vs the universe' No solutions are discussed, but I go into great detail of the sypmtoms I was seeing in different environments. In my case, though, it came down to a buggy ed driver in FreeBSD 4.0-RELEASE, when 4.1 came out I uprgaded, and voila! I had a working NIC. -- Brian 'you Bastard' Reichert <reichert@numachi.com> 37 Crystal Ave. #303 Daytime number: (603) 434-6842 Derry NH 03038-1713 USA Intel architecture: the left-hand path To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-mobile" in the body of the message
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