In the previous note, I meant the BMR used as FMR, to be technical. But here's another point from the same section:

   The length of r MAY be zero, in which case the complete IPv4 address
   or prefix is encoded in the EA bits.  If only a part of the IPv4
   address/prefix is encoded in the EA bits, the Rule IPv4 prefix is
   provisioned to the CE by other means (e.g.  a DHCPv6 option).

Question: does that second sentence also assume r = 0? If so, I think you've moved beyond what makes sense to document as part of MAP-E. Given that you have the MAP-E BMR mechanism, why wouldn't you use it?

Tom
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