8.0.17 Breaking change for Forward Headers Middleware

[Paulcappaert]

Is there an existing issue for this?

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Describe the bug

A change in the recent 8.0.17 Release has made it so that if a request does not come from a known proxy or network in the forwarded header options the ForwardedHeadersMiddleware will ignore the forwarded headers. This is a breaking change because if you simply do not specify any known proxies or networks when creating the options the middleware will ignore all forwarded headers that worked in 8.0.16 and before.

Expected Behavior

If you don't specify any known networks or proxies the forwarded headers middleware should work as intended

Steps To Reproduce

No response

Exceptions (if any)

No response

.NET Version

No response

Anything else?

No response

[BrennanConroy]

This has been noted in the known issues section of the release notes: dotnet/core#9930

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