下载了Openwrt 15.05的主干版本，编译后的固件进行ipk更新时，还是出现内核不兼容的提示： root@OpenWrt:~# opkg install ppp-mod-pptp Installing ppp-mod-pptp (2.4.7-6) to root... Downloading http://downloads.openwrt.org/chaos_calmer/15.05/ar71xx/generic/packages/base/ppp-mod-pptp_2.4.7-6_ar71xx.ipk. Collected errors: * satisfy_dependencies_for: Cannot satisfy the following dependencies for ppp-mod-pptp: * kernel (= 3.18.20-1-7bed08fa9c06 ...