K 10 svn:author V 6 qingli K 8 svn:date V 27 2010-02-27T07:12:25.852041Z K 7 svn:log V 209 Use reference counting instead of locking to secure an address while that address is being used to generate temporary IPv6 address. This approach is sufficient and avoids recursive locking. MFC after: 3 days END