SNMP support in Zephyr

[cbrake]

I'm looking at adding SNMP support to Zephyr. So far I've looked at various Arduino implementations, but they are all C++, and I'd like to avoid that.

Porting pieces of net-snmp seems to be the best approach I've found yet, so working on that.

I don't have anything to share yet, but if anyone has interest, let me know.

[mariopaja]

@cbrake this is a topic that could be interesting for one of our projects. We have kind of skipped it because it was not a hard requirement for the endpoints, but definitely interesting to have it or being able to implement it

[jukkar]

I was looking at this some time ago, but did not had time to work on it.
I think the lwip snmp implementation might be easy to port to zephyr https://github.com/lwip-tcpip/lwip/tree/master/src/apps/snmp

[cbrake]

Thanks for the link -- this does look like a good starting point -- much better than anything I've found yet.

[clamattia]

We are interested in this.

[clamattia]

See also: #2329