Hi all,

We would like to suggest updating rfc6833bis [1] to include the xTR-ID in
the Map-Request, in the same way that is already defined for the
Map-Register.

In particular, we propose to update the Map-Request message format in page
10 to include an I-bit right next to the m-bit (i.e. the I-bit would be in
position 11). We suggest the following text to be included in page 11,
after the explanation of the m-bit:

“I: This is the xTR-ID bit. When this bit is set, a 128-bit xTR-ID field
followed by a 64-bit Site-ID field are appended to the end of the
Map-Request, immediately following the last EID-Record (or the Map-Reply
Record, if present).”

Let us know what you think.

Thanks,
Alberto

[1] https://tools.ietf.org/html/draft-ietf-lisp-rfc6833bis-05
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