Obsolete IPNetwork #46157
Description
The BCL is planning a replacement for this type: dotnet/runtime#79946
We should consume theirs when available and obsolete ours.
Consider adding an implicit converter to minimize the breaking changes in the short term.
Proposed API
namespace Microsoft.AspNetCore.Builder; public class ForwardedHeadersOptions { + [Obsolete(...)] public IList<Microsoft.AspNetCore.HttpOverrides.IPNetwork> KnownNetworks { get; } + public IList<System.Net.IPNetwork> KnownIPNetworks { get; } }