interfaces

cat /etc/network/interfaces
# This file describes the network interfaces available on your system
# and how to activate them. For more information, see interfaces(5).

source /etc/network/interfaces.d/*

# The loopback network interface
auto lo
iface lo inet loopback
auto eth0
iface eth0 inet static
address 192.168.0.102
netmask 255.255.255.0
gateway 192.168.0.1
        auto xenbr0
iface xenbr0 inet static
address 192.168.0.102
netmask 255.255.255.0
gateway 192.168.0.1
bridge_ports eth0