rfc7286.txt:Hannes Tschofenig provided the initial input to the U-NAPTR solution:UNKNOWN:UNKNOWN:15:nov:2014:UNKNOWN:kwd,seccons,ianacons:draft-ietf-alto-server-discovery:none:none:0:0:0:0:0:0:2007-02-28:551:draft-jounay-pwe3-p2mp-pw-requirements:2008-09-04:1402:none:0