@type t() :: %Envoy.Config.Filter.Http.DynamicForwardProxy.V2alpha.PerRouteConfig{
__unknown_fields__: [
{field_number :: integer(), Protobuf.Wire.Types.wire_type(),
value :: term()}
],
host_rewrite_specifier:
{:host_rewrite, String.t()} | {:auto_host_rewrite_header, String.t()} | nil
}