Hello,

 

RFC4944 has the quote:

 

First, the left-most 32 bits are formed by concatenating 16 zero bits to the
16-bit PAN ID (alternatively, if no PAN ID is known, 16 zero bits may be
used).  This produces a 32-bit field as follows:

 

How does a receiving node know if zero's have been used there to recreate
the IP addresses? Unless I'm missing something, this seems to be a ambiguous
case. It seems unlikely a node will know it's short address but not PAN-ID.

 

Regards,

 

  -Colin

 

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