draft-ietf-v6ops-ula-usage-recommendations-05.txt:Bing Liu:huawei:china:16:may:2015:2:kwd,seccons,ianacons:Active:: draft-ietf-v6ops-ula-usage-recommendations-05.txt:Sheng Jiang:huawei:china:16:may:2015:2:kwd,seccons,ianacons:Active::