The Elastic Common Schema defines the semantic conventions host.ip and host.mac, that state, respectively, the known IP and MAC addresses of a given host.

This issue tracks incorporating them into the OpenTelemetry semantic conventions. There are two open questions or clarifications that I feel need to be resolved before adding these to OpenTelemetry:

1. Should IPv4 and IPv6 be distinguished in separate semantic conventions?
2. Should this belong to the host namespace of is this a network semantic convention that should be under the system.network namespace?

These may be part of open-telemetry/opentelemetry-specification#3556 if approved.