Here our VPN is implemented using Apple's PacketProviderNetworkExtension.  As per this network extension, iOS ensures that traffic is first tunnelled through this local VPN and then packets are routed to original destination. Hope this answers your question.

Thank you for your response.  Our VPN is implemented using Apple's PacketProviderNetworkExtension. As per this network extension, iOS ensures that traffic is first tunnelled through this local VPN and then packets are routed to original destination. I can ensure that this is a valid case. We are hitting this problem with our local VPN and we are ablate reproduce this with some other local and remote VPN solutions. I think in either case, your suggestion is to file a bug. Will do so, I can provide more details. Thanks for your time.