OpenWrt/TP-Link TL-MR3020

/config/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 '192.168.111.20'
	option netmask '255.255.255.0'
	option gateway '192.168.111.1'
	list dns '192.168.111.1'

/config/dhcp

config dnsmasq
	option domainneeded	1
	option boguspriv	1
	option filterwin2k	0  # enable for dial on demand
	option localise_queries	1
	option rebind_protection 1  # disable if upstream must serve RFC1918 addresses
	option rebind_localhost 1  # enable for RBL checking and similar services
	#list rebind_domain example.lan  # whitelist RFC1918 responses for domains
	option local	'/lan/'
	option domain	'lan'
	option expandhosts	1
	option nonegcache	0
	option authoritative	1
	option readethers	1
	option leasefile	'/tmp/dhcp.leases'
	option resolvfile	'/tmp/resolv.conf.auto'
	#list server		'/mycompany.local/1.2.3.4'
	#option nonwildcard	1
	#list interface		br-lan
	#list notinterface	lo
	#list bogusnxdomain     '64.94.110.11'

config dhcp lan
	option interface	lan
	option ignore 	1
	option start 	100
	option limit	150
	option leasetime	12h

config dhcp wan
	option interface	wan
	option ignore	1

Block Device (root from usb stick)

opkg update
opkg install kmod-usb-uhci
insmod uhci
opkg install kmod-usb-ohci
insmod usb-ohci

opkg install kmod-usb-storage block-mount kmod-fs-ext4 kmod-nls-cp437 kmod-nls-cp850 kmod-nls-iso8859-1 kmod-nls-iso8859-15 kmod-scsi-core e2fsprogs fdisk

USB-Sound

opkg update
opkg install kmod-usb-audio kmod-sound-core madplay usbutils alsa-utils

Clear Flash

mtd -r erase rootfs_data