Michael Chen comment

"Section 11.4 paragraph 2:
  Old: "sends an Attach request over this connection with the
destination Resource-ID set to the joining node's Node-ID."
  New: "sends an Attach request over this connection with the
destination Resource-ID set to the joining node's Node-ID plus 1."

Section 12 paragraph 2:
  Old: "JN then sends an Attach through that peer to a Resource-ID of
itself (JN)."
  New: "JN then sends an Attach through that peer to a Resource-ID of
its Node-ID plus 1 (JN+1)."

Section 12 diagram after paragraph 2:
  Old: "AttachReq Dest=JN"    2 occurrences
  New: "AttachReq Dest=JN+1"  2 replacements"

- As suggested.