http://askubuntu.com/questions/711889/err-apt-get-update-on-ubuntu-14-04
即便給Ubuntu配置了代理,terminal能ping通網絡,火狐瀏覽器能上網,但依然連不上網絡安裝軟件和update,報下面的錯,
解決方案是:
Create /etc/apt/apt.conf to add proxy configuration for APT. sudo nano /etc/apt/apt.conf Add this line to your /etc/apt/apt.conf file Acquire::http::Proxy "http://proxyaddress:proxyport"; Save it with Ctrl+X, Y and retry: sudo apt-get update
sudo apt-get update Err http://extras.ubuntu.com trusty InRelease Err http://extras.ubuntu.com trusty Release.gpg Cannot initiate the connection to extras.ubuntu.com:80 (2001:67c:1360:8c01::23). - connect (101: Network is unreachable) [IP: 2001:67c:1360:8c01::23 80] Err http://us.archive.ubuntu.com trusty InRelease Err http://us.archive.ubuntu.com trusty-updates InRelease Err http://us.archive.ubuntu.com trusty-backports InRelease Err http://us.archive.ubuntu.com trusty-proposed InRelease Err http://us.archive.ubuntu.com trusty Release.gpg Cannot initiate the connection to us.archive.ubuntu.com:80 (2001:67c:1562::15). - connect (101: Network is unreachable) [IP: 2001:67c:1562::15 80] Err http://us.archive.ubuntu.com trusty-updates Release.gpg Cannot initiate the connection to us.archive.ubuntu.com:80 (2001:67c:1562::15). - connect (101: Network is unreachable) [IP: 2001:67c:1562::15 80] Err http://us.archive.ubuntu.com trusty-backports Release.gpg Cannot initiate the connection to us.archive.ubuntu.com:80 (2001:67c:1562::15). - connect (101: Network is unreachable) [IP: 2001:67c:1562::15 80] Err http://us.archive.ubuntu.com trusty-proposed Release.gpg Cannot initiate the connection to us.archive.ubuntu.com:80 (2001:67c:1562::15). - connect (101: Network is unreachable) [IP: 2001:67c:1562::15 80] Err http://security.ubuntu.com trusty-security InRelease Err http://security.ubuntu.com trusty-security Release.gpg Cannot initiate the connection to security.ubuntu.com:80 (2001:67c:1562::17). - connect (101: Network is unreachable) [IP: 2001:67c:1562::17 80] Reading package lists... Done W: Failed to fetch http://us.archive.ubuntu.com/ubuntu/dists/trusty/InRelease W: Failed to fetch http://us.archive.ubuntu.com/ubuntu/dists/trusty-updates/InRelease W: Failed to fetch http://us.archive.ubuntu.com/ubuntu/dists/trusty-backports/InRelease W: Failed to fetch http://security.ubuntu.com/ubuntu/dists/trusty-security/InRelease W: Failed to fetch http://extras.ubuntu.com/ubuntu/dists/trusty/InRelease W: Failed to fetch http://us.archive.ubuntu.com/ubuntu/dists/trusty-proposed/InRelease W: Failed to fetch http://extras.ubuntu.com/ubuntu/dists/trusty/Release.gpg Cannot initiate the connection to extras.ubuntu.com:80 (2001:67c:1360:8c01::23). - connect (101: Network is unreachable) [IP: 2001:67c:1360:8c01::23 80] W: Failed to fetch http://us.archive.ubuntu.com/ubuntu/dists/trusty/Release.gpg Cannot initiate the connection to us.archive.ubuntu.com:80 (2001:67c:1562::15). - connect (101: Network is unreachable) [IP: 2001:67c:1562::15 80] W: Failed to fetch http://us.archive.ubuntu.com/ubuntu/dists/trusty-updates/Release.gpg Cannot initiate the connection to us.archive.ubuntu.com:80 (2001:67c:1562::15). - connect (101: Network is unreachable) [IP: 2001:67c:1562::15 80] W: Failed to fetch http://us.archive.ubuntu.com/ubuntu/dists/trusty-backports/Release.gpg Cannot initiate the connection to us.archive.ubuntu.com:80 (2001:67c:1562::15). - connect (101: Network is unreachable) [IP: 2001:67c:1562::15 80] W: Failed to fetch http://us.archive.ubuntu.com/ubuntu/dists/trusty-proposed/Release.gpg Cannot initiate the connection to us.archive.ubuntu.com:80 (2001:67c:1562::15). - connect (101: Network is unreachable) [IP: 2001:67c:1562::15 80] W: Failed to fetch http://security.ubuntu.com/ubuntu/dists/trusty-security/Release.gpg Cannot initiate the connection to security.ubuntu.com:80 (2001:67c:1562::17). - connect (101: Network is unreachable) [IP: 2001:67c:1562::17 80] W: Some index files failed to download. They have been ignored, or old ones used instead.