auto lo
iface lo inet loopback
auto eth0
iface eth0 inet static
address $(fw_printenv -n ipaddr || echo 192.168.1.10)
netmask 255.255.255.0
hwaddress ether $(fw_printenv -n ethaddr || echo 00:24:B8:FF:FF:FF)
source /etc/network/interfaces.d/ppp0