vmware lance emulation has bug in multicast (it copies outgoing
	multicast datagram to inbound path, which should not happen), and
	if netbsd is run as guest OS (on top of vmware) it will fail to
	perform IPv6 duplicated-address-detection.  did the problem solved?
	(i don't use vmware myself)
	if not, i would like to put an workaround, as shown below:
	http://www.freebsd.org/cgi/cvsweb.cgi/src/sys/dev/lnc/if_lnc.c.diff?r1=1.80&r2=1.81

itojun