...
>
> in other words, a discovery msg with RM option - what does it mean,
really?  the obvious answer to me is "only gateways should process this."
>
> but that's only the beginning. "remote" could mean multiple hops across
heaven-knows-what kind of networking.  Sayonara, security!  and each local
network could have its own ideas about security.
>
another annoyance: compare the proposed RM coap option with the standard
proxy options.  the latter are bounded - there may be lots of hops, but you
know when you're done.  that is not the case with multicast discovery
messages.  worst case is you discover the entire iot.
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