D-Link DIR-615 "shark" file: /etc/config/network

network

config interface 'loopback'
	option ifname 'lo'
	option proto 'static'
	option ipaddr '127.0.0.1'
	option netmask '255.0.0.0'

config interface 'lan'
	option ifname 'eth0'
	option type 'bridge'
	option proto 'static'
	option ipaddr '192.168.1.1'
	option netmask '255.255.255.0'
	option gateway '192.168.1.1'
	option delegate '0'

config interface 'wan'
	option ifname 'eth1'
	option proto 'pppoe'
	option username 'USERNAME'
	option password 'PASSWORD'
	option macaddr 'CLONED_MAC_ADDR'
	option service 'ISP_SERVICE_NAME'
	option mtu '1500'
	option disable_ipv6 '1'
	option delegate '0'

config switch
	option reset '1'
	option name 'switch0'
	option enable_vlan '1'

config switch_vlan
	option vlan '1'
	option ports '0 1 2 3 4'
	option device 'switch0'
	option vid '1'