TraceParent Flag -00 (no sample)

[federicobarera]

Microsoft.ApplicationInsights.AspNetCore 2.21.0
net8
Windows11/Ubuntu

Describe the bug

Issue described here as well: open-telemetry/opentelemetry-dotnet#5141.
We have a calling service instrumented with ApplicationInsights and a receiver system instrumented with OTEL. The calling system sends traceparent headers ending in -00, instructing downstream system not to sample any requests. Doesn't seem correlated to having dynamicsampling enabled or not (always see traceparent headers being sent with -00)

Is it an intended behavior?

To Reproduce

Create a self-contained project using the template of your choice, apply the minimum required code to result in the issue you're observing.

https://github.com/federicobarera/otel-repro-2

We will close this issue if:

• The repro project you share with us is complex. We can't investigate custom projects, so don't point us to such, please.
• If we will not be able to repro the behavior you're reporting

For Immediate Support

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[cijothomas]

same as #2156.