What's the different between net.peer.ip and http.client_ip in a Span

[lmssy]

I have an application provide http api, in a span with kind SPAN_KIND_SERVER there are net.peer.ip and http.client_ip in attributes with different ip values.

So what's the different of these 2 attributes? I think they should be a same ip which indicate the client who call my api.

[iNikem]

https://github.com/open-telemetry/opentelemetry-specification/blob/main/specification/trace/semantic_conventions/http.md#http-server-semantic-conventions actually explains this:

[http.client_ip] is not necessarily the same as net.peer.ip, which would identify the network-level peer, which may be a proxy

[lmssy]

Ah I see, Thanks a lot!