--+---------------+
    |                                                               |
    +                                                               +
    |                 GuidPrefix      guidPrefix                    |
    +                                                               +
    |                                                               |
    +---------------+---------------+---------------+---------------+

References:

* https://community.rti.com/static/documentation/wireshark/current/doc/understanding_rtps.html # noqa E501
* https://www.omg.org/spec/DDSI-RTPS/2.3/PDF
* https://www.wireshark.org/docs/dfref/r/rtps.html
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