Someone correct me if I'm wrong, but a router has to have at least two MAC addresses, right? Maybe you are seeing the two different eth devices.
2008/4/13, Hai Yi <[EMAIL PROTECTED]>: > > Thank you, Bryan: > > I think you are pretty much correct: it looks like this "arp" command > is equivalent to another command "ip neighbor", which pretty much > speaks for itself. However, I checked the MAC on my router, it appears > to be 00:14:BF:D3:AE:2A, which is one digit greater in the last > section than the one from arp command. (00:14:BF:D3:AE:29 ) Why is > that? > > Thanks, > > Hai > > > On Sun, Apr 13, 2008 at 2:15 PM, Bryan Richter <[EMAIL PROTECTED]> > wrote: > > 2008/4/13, Hai Yi <[EMAIL PROTECTED]>: > > > > > > > Hello, > > > > > > I thought I can get my ether card's MAC address by using either > > > "ifconfig eth0" command or "arp -v" command, but these commands > > > returned different MAC address(00:16:E6:5C:DA:B8 vs > > > 00:14:BF:D3:AE:29). Did I miss something here? > > > > > > I am using Ubuntu and the following are the results: > > > > > > > > > [EMAIL PROTECTED]:~$ ifconfig eth0 > > > eth0 Link encap:Ethernet HWaddr 00:16:E6:5C:DA:B8 > > > inet addr:192.168.1.103 Bcast:192.168.1.255 Mask: > 255.255.255.0 > > > inet6 addr: fe80::216:e6ff:fe5c:dab8/64 Scope:Link > > > UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1 > > > RX packets:27120 errors:0 dropped:0 overruns:0 frame:0 > > > TX packets:26884 errors:0 dropped:0 overruns:0 carrier:0 > > > collisions:0 txqueuelen:1000 > > > RX bytes:6831509 (6.5 MiB) TX bytes:3820509 (3.6 MiB) > > > Interrupt:16 > > > > > > [EMAIL PROTECTED]:~$ arp -v > > > Address HWtype HWaddress Flags Mask > > Iface > > > . ether 00:14:BF:D3:AE:29 C > > eth0 > > > Entries: 1 Skipped: 0 Found: 1 > > > > > > > > > Thanks a lot! > > > Hai > > > > > > I think arp shows your adapter's neighbors, not the adapter itself. I > only > > just read the man page for the first time, however, its results when I > run > > it seem to confirm that: > > > > 192.168.1.1 ether 00:18:4D:25:82:0D C > > ath0 > > > > My adapter's neighbor is, indeed, 192.168.1.1 (my router). > > > > ifconfig, on the other hand, seems like a much better place to find > info > > about the device, itself. Also, the address it gives for my device > matches > > the sticker that the manufacturer put on my laptop. :) > > > > -Bryan > > > _______________________________________________ > > vox-tech mailing list > > [email protected] > > http://lists.lugod.org/mailman/listinfo/vox-tech > > > > > _______________________________________________ > vox-tech mailing list > [email protected] > http://lists.lugod.org/mailman/listinfo/vox-tech > -- Bryan Richter
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