Opsdir last call review of draft-ietf-isis-mi-bis-02

Reviewer: Al Morton
Review result: Ready

This draft is a revision of RFC 6822, to add
the option to use multi-topology support:
"An MI-RTR MAY support [RFC5120] multi-topology within a non-zero
 instance when ITID #0 is supported."
This was previously forbidden in RFC 6822,
but deployment experience revealed a desire
for this ability.

Otherwise, the draft makes one clarification 
(placement of the IID-TLV as the first TLV in
 a PDU to speed recognition) and
deals with Errata of 6822.