configure interfaces

# /etc/network/interfaces

# loopback interface

auto lo

iface lo inet loopback

# The WAN interface (marked LAN1 on the case)

auto p4p1

iface p4p1 inet dhcp

# The LAN interface (marked LAN2 on the case)

auto p1p1

iface p1p1 inet static

address 192.168.99.1

netmask 255.255.255.0