[j-nsp] BMP and IPv6

[Vincent Bernat]

 ❦  6 décembre 2017 08:35 +0100, Vincent Bernat <bernat at luffy.cx> :

> Path Attribute - MP_REACH_NLRI
>     Flags: 0x90, Optional, Extended-Length, Non-transitive, Complete
>     Type Code: MP_REACH_NLRI (14)
>     Length: 30
>     Address family identifier (AFI): IPv6 (2)
>     Subsequent address family identifier (SAFI): Unicast (1)
>     Next hop network address (16 bytes)
>     Number of Subnetwork points of attachment (SNPA): 0
>     Network layer reachability information (9 bytes)
>         MP Reach NLRI length 184 invalid
>             [Expert Info (Error/Malformed): MP Reach NLRI length 184 invalid]
>
> 0000   90 0e 00 1e 00 02 01 10 20 01 0d b8 00 01 00 00  ........ .......
> 0010   00 00 00 00 00 00 00 01 00 40 20 01 0d b8 00 53  .........@ ....S
> 0020   00 00                                            ..
>
> Moreover, when routes are withdrawn, the UPDATE message doesn't contain
> withdrawn routes but come with a MP_UNREACH_NLRI which has the same
> encoding problem.

In fact, the MP NLRI is correctly encoded. This seems to be a bug in Wireshark.
-- 
Use self-identifying input.  Allow defaults.  Echo both on output.
            - The Elements of Programming Style (Kernighan & Plauger)