OK, I did some testing: rebooted from Linux to Windows and the other way around a couple of times and got the following peculiar results:
1. linux: 0:80:0:10:b7:7c 2. windows: 0:10:5a:92:b7:7c 3. linux: 80:0:0:10:85:bb 4. windows: 0:10:5a:92:b7:7c 5. linux: 2:0:0:10:2:16 6. windows: 0:10:5a:92:b7:7c 7. linux: 4:0:0:10:8:5b It seems to be a linux-only problem, windows is stable (at least something about Windows that's stable :-) ). ...wait a minute... turning of vmware ethernet bridge... 8. linux: 0:10:5a:92:b7:7c ...looks good... once more... 9. linux: 1:0:0:10:1:b ...damn... 10. linux: 0:10:5a:92:b7:7c I think it's not even Linux, it's probably the card itself :-( I should again get a bogus one... 11. linux: 1:0:0:10:1:b ...yep there it is again :-( OK never mind it seems to be something with the card itself :-( Nico > Hello James M., > > On 12-Aug-99, you wrote: > > <snip>... > > LJM> MAC addr is another story. > LJM> That should be fixed to the adaptor and never change. (Well, > LJM> almost never. There are a few that have mac addresses that > LJM> are able to be modified with a special utility. The only ones > LJM> I know about are for older minicomputers...) > LJM> > > Likewise, I have encountered systems where the Eth Addr could be changed > but again, it was a long time ago and I think they were minis. I doubt > the 3Com NIC Eth could be changed. > > LJM>> I have a portable with a 3Com 3CCE589ET CPCMCIA network > LJM>> adapter. I'm also running arpwatch on my network to check for > LJM>> "ellegal aliens". I noticed that everytime a reboot my portable > LJM>> from linux to windows or the other way around I get a message > LJM>> from arpwatch that the Ethernet address of my portable changed. > LJM>> Shouldn't the ethernet address be network-card-specific. Is either > LJM>> Linux or Windows98 changing my Ethernet address and ifso why? > LJM>> > > Assuming arp on Debian is like other unixes I've used, go to another m/c > on your network and ping your laptop then arp -a it - this should > return the Eth. Do it before and after rebooting the L/T. > > Also, does arpwatch give you the addresses? Are the addresses > consistent - is the change always from addr A to addr B or does it > vary. For example, if you boot from Windoze to Debian and then back to > W, what addresses are reported by arpwatch and what do you get by > ping/arp -a at each step? > > Could this just be the NIC Eth going to null during the re-boot? > > Regards, > > LeeE > -- > > http://www.spatial.freeserve.co.uk > > > > > -- > Unsubscribe? mail -s unsubscribe [EMAIL PROTECTED] < /dev/null > -- -------------------------------------------------------- How do you tell when you run out of invisible ink? -------------------------------------------------------- Nico De Ranter Sony Service Center (SUPC-E/NSSE) Sint Stevens Woluwestraat 55 (Rue de Woluwe-Saint-Etienne) 1130 Brussel (Bruxelles), Belgium, Europe, Earth Telephone: +32 2 724 86 41 Telefax: +32 2 726 26 86 e-mail: [EMAIL PROTECTED]
