I use TUN/TAP to create a tun NIC
tun0 with IP 10.10.10.2, and I have a real NIC
eth0 with IP 184.108.40.206
Then I run a TCP client which binds its socket to 220.127.116.11 and a TCP server binding 10.10.10.2. but I can't establish a tcp connection between them.
So can a TCP client on one NIC connect to a tcp server on the other NIC?