Is that 11xx xxxx as in local group address or xxxx xx00 as in universal unicast? Tom Petch -----Original Message----- From: Adam Roach <adam@xxxxxxxxxxxxxxx> To: 'Theodore Ts'o' <tytso@xxxxxxx>; Brett Thorson <bthorson@xxxxxxxxxxx> Cc: ietf@xxxxxxxx <ietf@xxxxxxxx>; 58crew@xxxxxxxx <58crew@xxxxxxxx> Date: 20 November 2003 17:23 Subject: RE: IETF58 - Network Facts >Theodore Ts'o wrote: > >> Would it be possible to publish a list of MAC addresses that were >> operating in ad-hoc or AP mode? If all of the happened to come from a >> signle manufacturer, that might be a very interesting data point. > >A lot -- possibly even a majority -- of the cards I saw operating in >ad-hoc mode were using mac address prefixes that aren't assigned >to any manufacturer by the IEEE [1]. Many started with the octet "C0". >I even saw a card in ad-hoc mode with a MAC address of FF:FF:FF::FF:FF:FF. >