Code:
auto lo
iface lo inet loopback
#auto xenbr0
#iface xenbr0 inet static
# address 172.20.2.160
# netmask 255.255.255.0
# network 172.20.2.0
# broadcast 172.20.2.255
# gateway 172.20.2.1
# bridge_ports eth0
# optional
# bridge_maxwait 0
auto eth0
iface eth0 inet static
address 172.20.2.160
netmask 255.255.255.0
network 172.20.2.0
broadcast 172.20.2.255
gateway 172.20.2.1
it's strange that i can't ping the gateway, neither the subnet 172.20.2.x