Req:
POST /rd?ep=node1&base=http://[2001:db8:1::1] HTTP/1.1
Host: rd.example.com
Content-Type: application/link-format

</sensors/temp>;rt=temperature-c;if=sensor,
<http://www.example.com/sensors/temp>;
  anchor="/sensors/temp";rel=describedby

Res:
HTTP/1.1 201 Created
Location: /rd/4521