Last draft appeared to be
http://www.watersprings.org/pub/id/draft-retana-marp-02.txt
which expired Sept 2003 (Abstract: defines a protocol to quickly determine
the existence or aliveness of devices attached to a shared media
(broadcast) subnet.)
First read about it in this presentation, where it was billed as an
alternative to fast hellos:
http://routing.internet2.edu/wg-meetings/20021029-I2rwg-slides/20021029-daugherty-routing-opt.pdf
The idea was that a switch could notify connected routers of link failures
immediately - there would be no need to wait for the dead and hold-timers
to expire.
Is this idea still flying? There appears to be very little on the net
about it, except what I've mentioned above.
Sam