换了源之后,不能 update 。 dns 修改成 8.8.8.8 无效, ping mirrors.tuna.tsinghua.edu.cn 返回的 IP 正确。 有解决方案吗?
root@12313132131:~# apt update
Err:1 https://mirrors.tuna.tsinghua.edu.cn/ubuntu xenial InRelease
Failed to connect to mirrors.aliyun.com port 443: Connection timed out
Err:2 https://mirrors.tuna.tsinghua.edu.cn/ubuntu xenial-updates InRelease
Failed to connect to mirrors.aliyun.com port 443: Connection timed out
Err:3 https://mirrors.tuna.tsinghua.edu.cn/ubuntu xenial-backports InRelease
Failed to connect to mirrors.aliyun.com port 443: Connection timed out
Err:4 https://mirrors.tuna.tsinghua.edu.cn/ubuntu xenial-security InRelease
Failed to connect to mirrors.aliyun.com port 443: Connection timed out
0% [Working]^C
阿里云的渣渣镜像服务器,自己挂了不能用,我改了源还是不行,原来是自己加的代理,真是服了。