Hi Andrew,

I took a quick look at draft-alston-spring-crh-bgp-signalling-00. In Section 3.1, there is the following:

  "Since SIDs in the context of a compressed routing header can be
   either 16bit of 32bit, the attribute value MUST be either 2 or 4 and
   the attribute MUST be ignored if this is not the case."

Where does the 2 or 4 come from? Is the draft trying to specify that the compressed routing header is malformed if the attribute value is not 2 or 4?

Regards,
S. Moonesamy

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