Thanks for the reply.Could you point me to some types which I can start exploring for this purpose.Basic functionality of my software is to avoid duplication by caching the network data and only send what is new and refrences for cached data. For this purpose my extension have to consume the packet which will indicate that now we are responsible for the packet and we will in turn send new data which will be understood by destination. This functionality is present in kext but i am not able to find how to do it in system extensions.Please point me to some refrences which can be used to achieve mentioned functionality in system extensions.

Hi, Any updates on this?Really looking for some pointers as need to get it done before 10.16 which is going to deprecate my current kext.

I was just looking into "Packet Tunnel Provider" and "App Proxy provider".As my current kext works on per packet, I think Packet Tunnel Provider can be an approach forward but not sure exactly how.So my idea here is,1. My system extension will get the packets from kernel using NEPacketTunnelProvider2. Then instead of sending the packets to some external VPN server, I can send to my local server which will another application responsible for mentioned caching.3. After the caching and modification is done, I will forward new data to its original destination.I am developing this for macOS.Quinn, is it something that seems possible for my case? Any restrictions that I should be aware of?or there is "Transparent Proxy" also, I still have to go through it. Just wanted to understand which will be better to use.

Hi guys,I tried same thing and faced similar issue. Could you help on how it is solved??I tried starting a new discussion but it is stuck at "waiting on moderator approval" from last couple of days.