The options that are used to compute the relative URI-reference are collectively called Location-\* options. Beyond Location-Path and Location-Query, more Location-\* options may be defined in the future and have been reserved option numbers 128, 132, 136, and 140. If any of these reserved option numbers occurs in addition to Location-Path and/or Location-Query and are not supported, then a 4.02 (Bad Option) error MUST be returned.
Currently we are ignoring options 128, 132, 136, and 140. This must be fixed to be in compliance with RFC7252.
The relevant portion of RFC7252 section 5.10.7 is the last paragraph (emphasis mine):
Currently we are ignoring options 128, 132, 136, and 140. This must be fixed to be in compliance with RFC7252.