idnits 2.17.1 

draft-ietf-mip6-mn-ident-option-04.txt:
  Skipping this file; it looks like a tombstone file to me.
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1	This Internet-Draft, draft-ietf-mip6-mn-ident-option-03.txt, was published as a Proposed Standard, RFC 4283
2	(http://www.ietf.org/rfc/rfc4283.txt), on 2005-12-6.