Thanks Eskimo for your quick response! We have submitted a feedback for the same and here is the feedback ID FB13806349 . ... Thanks & Regards, Mohmad Vasim

Thanks Matt for your valuable response! There is no API to tell if the flow is valid or not. Certainly if the flow has been dropped then it will be invalid but your app's code should be able to detect this. Also, if your app pauses a UDP based flow for more than 10 seconds then the flow will be dropped automatically, so be mindful of this behavior. if app pause UDP flow more than 10 seconds and we see "Ignoring resume command for flow 3c8faf3c4a9f7 which does not exist" does any property of NEFilterFlow say remoteEndpoint or some other property is set to nil which we can check before invoking resumeFlow call. This log looks like it's being emitted from our system. As its very intermittent to reproduce the problem It would be appreciated if you elaborate more on this and provide us some hints why and when it will be generated by seeing the system code so that we will focus on that and will try to generate this again. Thanks & Regards Mohmad Vasim