Ifconfig /
Configuring virtual Ethernet interfaces
At times, you may find it helpful to create a vether(4) device. This vether interface, for example, can be used inside a bridge(4).
For example, we might create /etc/hostname.vether0:
inet 192.168.0.1 255.255.255.255
Replace 192.168.0.1
with the actual IP address you intend to use as the
default gateway. Replace 255.255.255.255
with the subnet mask.
Creating bridge device
Next we must create /etc/hostname.bridge0:
add vether0
This vether interface can now serve as the default gateway for tap interfaces generated by vmm that are connected by the bridge.