🤦 Request#remote_ip has to work without the middleware

actionpack/lib/action_dispatch/http/request.rb

@@ -155,9 +155,9 @@ module ActionDispatch
       @ip ||= super
     end
 
-    # Originating IP address from the RemoteIp middleware.
+    # Originating IP address, usually set by the RemoteIp middleware.
     def remote_ip
-      @remote_ip ||= @env["action_dispatch.remote_ip"]
+      @remote_ip ||= @env["action_dispatch.remote_ip"] || ip
     end
 
     # Returns the unique request id, which is based off either the X-Request-Id header that can

actionpack/lib/action_dispatch/middleware/remote_ip.rb

@@ -58,7 +58,7 @@ module ActionDispatch
         not_proxy = client_ip || forwarded_ips.last || remote_addrs.first
 
         # Return first REMOTE_ADDR if there are no other options
-        not_proxy || ips_from('REMOTE_ADDR', :all).first
+        not_proxy || ips_from('REMOTE_ADDR', :allow_proxies).first
       end
 
       def to_s