Is there a way to link two servers via internet as they would have been connected via simple network switch?
I have :
- Server A which only has single network interface eth0 with public IP AAA.AAA.AAA.AAA.
- Server B which only has single network interface eth0 with public IP BBB.BBB.BBB.BBB.
On each of those servers i have virtual machines (opennebula):
- server A has a virbr0 interface with 192.168.122.0/24 network
- server B has a virbr0 interface with 192.168.123.0/24 network
Virtual machines access internet via that virbr0 interface and everything works fine.
Server A and B also have a OpenVPN client installed, and OpenVPN server routes traffic to them form other vpn clients
Now what i would like to change, is link those two opennebula boxes (and later - more of them), and use only one 192.168.122.0/24 subnet (so that there would not be just single subnet for other vpn clients to access). Opennebula would ensure that there are no ip clashes, as it would allocate ip addresses.
If i would have a separate network card (eth1) via which those servers would be linked, i could just create a bridge, and it would work, but for now this not an option. Any way to accomplish this via some kind of software (network performance is not very important)
