I created a tunnel “utun1” on the A device (the local ipv4 ip address of the tunnel “utun1” is 6.6.6.6) and then created a socket in the packettunnel process (socket binding 6.6.6.6:8088) and called the accept() function, then the A device Turn on the personal hotspot (hotspot name iPhone Wi-Fi), and then connect the B device to Wi-Fi (iPhone Wi-Fi). Create a socket on device B and try connet (6.6.6.6:8088), my question is why the socket of device B cannot connect to 6.6.6.6:8088