K 10
svn:author
V 6
qingli
K 8
svn:date
V 27
2010-03-16T17:59:12.478598Z
K 7
svn:log
V 405
Verify interface up status using its link state only
if the interface has such capability. The interface
capability flag indicates whether such capability
exists. This approach is much more backward compatible.
Physical device driver changes will be part of another
commit.

Also updated the ifconfig utility to show the LINKSTATE
capability if present.

Reviewed by:	rwatson, imp, juli
MFC after:	3 days

END