我有一个基于C++语言的VPNC linux的开源软件。下载链接是: (我使用vpnc-0.5.3.tar.gz)。但我在下面输入问题:SharedLibrary : libvpnc.so
./obj/local/armeabi/objs/vpnc/vpnc.o: In function `lifetime_i
Could not connect to 172.16.63.15:3128 (172.16.63.15), connection timed out
W: Failed to fetch http://dl.google.com/linuxW: Duplicate sources.list entry