rfc8197.txt:Henning Schulzrinne:fcc:usa:8:jul:2017:UNKNOWN:kwd,seccons,ianacons:draft-ietf-sipcore-status-unwanted:2002-06-14:2002-05-15:22:0:0:7:29:0:2001-12-17:131:draft-schulzrinne-sip-reason:2002-4-23:22:2002-12-13:179