I recently restarted the router in my lab (ipfilter/nat on NetBSD 1.5.1),
and I noticed the boot messages:

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?

-- 
henry nelson
 | day job: | http://www.irm.nara.kindai.ac.jp/biorec/nehan/henken.html |