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Date:      Sat, 2 Dec 2000 16:08:15 -0500 (EST)
From:      Jim Freeze <jim@freeze.org>
To:        questions@freebsd.org
Subject:   Is NIC with MAC = ff:ff:ff:ff:ff:ff OK?
Message-ID:  <Pine.BSF.4.21.0012021605250.60602-100000@www.bellnetworks.net>

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Windows does not seem to like a MAC of all ff's.
Can someone help out here?


On Sat, 2 Dec 2000, Jim Freeze wrote:

> > > % dmesg | grep al0
> > > al0: <ADMtek AN985 10/100BaseTX> rev 0x11 int a irq 5 on pci0.11.0
> > > al0: Ethernet address: ff:ff:ff:ff:ff:ff
> > > al0: autoneg complete, link status good (full-duplex, 100Mbps)
> > > al0: promiscuous mode enabled
> > 
> > Having never seen this before, are both NICs on your LAN set for
> and
> > running at full-duplex? Does "dmesg" make a difference if you stop your
> > "tcpdump", as I think that's why the NIC is showing in promiscous mode.
> > 
> I'm not sure what you mean.
> The second NIC has always had ff:ff... as its MAC.
> 
> Is there anyway to change that?

> > That's where my knowledge ends as I've never heard of a NIC showing a
> MAC
> >>address of all ff's. Any one else know what's going on?


Jim




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