| 本来好好的，今天开机忽然firefox就不能上网了，apt-get 也不能用了，但是 chrome 可以上网，ping www.google.com 是通的，调出 /etc/resolv.conf 中的 dns， 也是可以 ping 得通的。 各位可知这是什么问题？ $ sudo apt-get update 错误 http://ftp.us.debian.org wheezy Release.gpg 无法解析域名“ftp.us.debian.org” 错误 http://mirrors.163.com wheezy Release.gpg 无法解析域名“mirrors.163.com” 错误 http://security.debian.org wheezy/updates Release.gpg 无法解析域名“security.debian.org” 正在读取软件包列表... 完成 W: 无法下载 http://mirrors.163.com/debian/dists/wheezy/Release.gpg 无法解析域名“mirrors.163.com” W: 无法下载 http://security.debian.org/dists/wheezy/updates/Release.gpg 无法解析域名“security.debian.org” W: 无法下载 http://ftp.us.debian.org/debian/dists/wheezy/Release.gpg 无法解析域名“ftp.us.debian.org” W: Some index files failed to download. They have been ignored, or old ones used instead. $ ping www.google.com PING www.google.com (173.194.72.103) 56(84) bytes of data. 64 bytes from tf-in-f103.1e100.net (173.194.72.103): icmp_req=2 ttl=45 time=75.5 ms 64 bytes from tf-in-f103.1e100.net (173.194.72.103): icmp_req=3 ttl=45 time=73.9 ms 64 bytes from tf-in-f103.1e100.net (173.194.72.103): icmp_req=5 ttl=45 time=75.3 ms 64 bytes from tf-in-f103.1e100.net (173.194.72.103): icmp_req=6 ttl=45 time=74.1 ms ^C --- www.google.com ping statistics --- 6 packets transmitted, 4 received, 33% packet loss, time 5010ms rtt min/avg/max/mdev = 73.976/74.753/75.502/0.717 ms $ ping 8.8.8.8 PING 8.8.8.8 (8.8.8.8) 56(84) bytes of data. 64 bytes from 8.8.8.8: icmp_req=2 ttl=42 time=107 ms 64 bytes from 8.8.8.8: icmp_req=3 ttl=42 time=108 ms 64 bytes from 8.8.8.8: icmp_req=5 ttl=42 time=107 ms 64 bytes from 8.8.8.8: icmp_req=6 ttl=42 time=108 ms ^C --- 8.8.8.8 ping statistics --- 6 packets transmitted, 4 received, 33% packet loss, time 5021ms rtt min/avg/max/mdev = 107.665/108.182/108.694/0.399 ms |