I heard TUN and TAP interfaces and have seen TAP interfaces many times when a virtual machine is created within a host machine. I am looking for examples of TUN interfaces, any use case would help me a lot to understand this. Thanks in advance.
What are the functions performed by tun/tap interface ?
It might be possible one VM is spawned up at one site and another VM is launched at the different sites but both the VMs belong to same service and same sub net such as 10.1.1.x and 10.1.1.y series IP. Now I want to know which protocol/technology can be used to enable fast communication between these two VMs as appear as both are in same site/hardware.
One server may have support of limited number of physical interfaces. What if there is need of more Ethernet interfaces but physical slots are not available ?
