搭配可以使用的软件
ChinaDNS 1.3.2-3
luci-app-chinadns 1.4.0-1
luci-app-shadowsocks 1.3.7-1
shadowsocks-libev 2.5.6-1

原来的源不行，要修改

src/gz designated_driver_base http://downloads.openwrt.org/snapshots/trunk/ramips/mt7620/packages/base
src/gz designated_driver_kernel http://downloads.openwrt.org/snapshots/trunk/ramips/mt7620/packages/kernel
src/gz designated_driver_telephony http://downloads.openwrt.org/snapshots/trunk/ramips/mt7620/packages/telephony
src/gz designated_driver_packages http://downloads.openwrt.org/snapshots/trunk/ramips/mt7620/packages/packages
src/gz designated_driver_routing http://downloads.openwrt.org/snapshots/trunk/ramips/mt7620/packages/routing
src/gz designated_driver_luci http://downloads.openwrt.org/snapshots/trunk/ramips/mt7620/packages/luci
src/gz designated_driver_management http://downloads.openwrt.org/snapshots/trunk/ramips/mt7620/packages/management
# src/gz designated_driver_targets http://downloads.openwrt.org/snapshots/trunk/ramips/mt7620/packages/targets

为：
src/gz chaos_calmer_base http://openwrt.proxy.ustclug.org/chaos_calmer/15.05//ramips/mt7620/packages/base
src/gz chaos_calmer_luci http://openwrt.proxy.ustclug.org/chaos_calmer/15.05//ramips/mt7620/packages/luci
src/gz chaos_calmer_management http://openwrt.proxy.ustclug.org/chaos_calmer/15.05//ramips/mt7620/packages/management
src/gz chaos_calmer_packages http://openwrt.proxy.ustclug.org/chaos_calmer/15.05//ramips/mt7620/packages/packages
src/gz chaos_calmer_routing http://openwrt.proxy.ustclug.org/chaos_calmer/15.05//ramips/mt7620/packages/routing
src/gz chaos_calmer_telephony http://openwrt.proxy.ustclug.org/chaos_calmer/15.05//ramips/mt7620/packages/telephony

升级出错可能是wget不支持ssl，更新可以http的源后，即可。

相关配置文件

mkdir /etc/shadowsocks
wget -O- ‘http://ftp.apnic.net/apnic/stats/apnic/delegated-apnic-latest’ | awk -F\| ‘/CN\|ipv4/ { printf(“%s/%d\n”, $4, 32-log($5)/log(2)) }’ > /etc/shadowsocks/ignore.list
wget -O- ‘http://ftp.apnic.net/apnic/stats/apnic/delegated-apnic-latest’ | awk -F\| ‘/CN\|ipv4/ { printf(“%s/%d\n”, $4, 32-log($5)/log(2)) }’ > /etc/chinadns_chnroute.txt

路由器配置

CPU: MT7620N，580MHz。
RAM：32MB
FLASH: 16MB
USB：2.0接口，一个
有线网口：1个RJ45网口，用作 WAN 口。
无线：802.11bgn，2T2R。