On Wed, 17 Dec 2003, Klaus Klein wrote:

> On Wednesday 17 December 2003 12:15, Robert Elz wrote:
> 
> >     Date:        Wed, 17 Dec 2003 14:22:08 +0900
> >     From:        henry nelson <netb@irm.nara.kindai.ac.jp>
> >     Message-ID:  <20031217052208.GA28790@irm.nara.kindai.ac.jp>
> >
> >   | Adding interface aliases:
> >   | ep0: DAD detected duplicate IPv6 address
> >   | fe80:0001::0260:97ff:fe13:39e7: 20 NS, 0 NA ep0: DAD complete for
> >   | fe80:0001::0260:97ff:fe13:39e7 - duplicate found ep0: manual
> >   | intervention required
> >   |
> >   | I have absolutely no idea what "DAD" is or where to begin to research
> >   | this problem.  What kind of "manual intervention [is] required"? 
> >   | Should I just turn IPv6 off (How?) since I'm not using it?
SNIP
> It is also possible that this is an issue with the ep(4) driver
> itself; see PR kern/17523 for a discussion of such an issue with hme(4).
> For debugging purposes, putting another system on the same wire and
> running tcpdump on it might be useful.
> 
> - Klaus

I concur with Klaus, are you autodetecting the link speed?  If so try
setting the link speed and duplex setting in the ifconfig.ep0 file.  This
was the way I worked around it on an hme device.  Please post the output
of ifconfig ep0 also.

g.day