gRPC & service discovery - dangling reference

[elear]

*Note:* The details of how gRPC is mapped to the SCION data plane
will be described in a separate document.

Which document?

[nicorusti]

This is referring to the SCION gRPC API.

P.S.: There is ongoing work to transition to connect, see scionproto/scion#4434 / https://github.com/scionproto/scion/tree/connectrpc (which is incrementally deployable and backwards compatible to legacy gRPC nodes), also see IETF 118 Hackathon presentation

@matzf @jiceatscion check status in scionproto and see how this can be described within this draft. We could use some text from here

Relates to scionassociation/scion-dp_I-D#13