If I try to do this I get the following:
bash-3.2# ifconfig tun0 10.140.1.40 ifconfig: ioctl (SIOCAIFADDR): Destination address required
It sounds like this doesn't happen in Linux (probably this is a BSD thing). The problem is I need to have a generic tun interface without a specific destination address because I am trying to do LVS-TUN like in this example but I need to use an OSX real server (strange I know).
What is the way to implement a ipip virtual interface on OSX?