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 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'
	option localise_queries '1'
	option rebind_protection '1'
	option rebind_localhost '1'
	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'

config dhcp 'lan'
	option interface 'lan'
	option ignore '1'

config dhcp 'wan'
	option interface 'wan'
	option ignore '1'

config dhcp
	option start '100'
	option leasetime '12h'
	option limit '150'
	option interface 'eth'

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