pandorabox默认opkg配置
dest root /
dest ram /tmp
lists_dir ext /var/opkg-lists
option overlay_root /overlay
src/gz r2_base http://downloads.openwrt.org.cn/PandoraBox/ralink/packages/base
src/gz r2_management http://downloads.openwrt.org.cn/PandoraBox/ralink/packages/management
src/gz r2_oldpackages http://downloads.openwrt.org.cn/PandoraBox/ralink/packages/oldpackages
src/gz r2_packages http://downloads.openwrt.org.cn/PandoraBox/ralink/packages/packages
src/gz r2_routing http://downloads.openwrt.org.cn/PandoraBox/ralink/packages/routing
src/gz r2_telephony http://downloads.openwrt.org.cn/PandoraBox/ralink/packages/telephony