从12.04升级到14.04 LTS后没有互联网连接
升级后的Ubuntu Desktop Server从12.04升级到14.04 LTS，之后无法连接到互联网。 我也试过发布apt-get update命令，但是我收到如下错误：
Err http://ph.archive.ubuntu.com trusty InRelease Err http://ph.archive.ubuntu.com trusty-updates InRelease Err http://ph.archive.ubuntu.com trusty-backports InRelease Err http://security.ubuntu.com trusty-security InRelease Err http://extras.ubuntu.com trusty InRelease Reading package lists... Done W: Failed to fetch http://ph.archive.ubuntu.com/ubuntu/dists/trusty/InRelease W: Failed to fetch http://ph.archive.ubuntu.com/ubuntu/dists/trusty-updates/InRelease W: Failed to fetch http://ph.archive.ubuntu.com/ubuntu/dists/trusty-backports/InRelease W: Failed to fetch http://security.ubuntu.com/ubuntu/dists/trusty-security/InRelease
我的网络配置没有改变任何内容（见下文）
eth0 Link encap:Ethernet HWaddr b8:ac:6f:24:6c:7c inet addr:192.168.23.133 Bcast:192.168.23.255 Mask:255.255.255.0 inet6 addr: fe80::baac:6fff:fe24:6c7c/64 Scope:Link UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1 RX packets:44316 errors:0 dropped:0 overruns:0 frame:0 TX packets:1103 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:1000 RX bytes:4004261 (4.0 MB) TX bytes:176751 (176.7 KB) Interrupt:21 Memory:fe6e0000-fe700000 lo Link encap:Local Loopback inet addr:127.0.0.1 Mask:255.0.0.0 inet6 addr: ::1/128 Scope:Host UP LOOPBACK RUNNING MTU:65536 Metric:1 RX packets:511 errors:0 dropped:0 overruns:0 frame:0 TX packets:511 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:0 RX bytes:40241 (40.2 KB) TX bytes:40241 (40.2 KB) virbr0 Link encap:Ethernet HWaddr ee:6e:1d:9b:48:fb inet addr:192.168.122.1 Bcast:192.168.122.255 Mask:255.255.255.0 UP BROADCAST MULTICAST MTU:1500 Metric:1 RX packets:0 errors:0 dropped:0 overruns:0 frame:0 TX packets:0 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:0 RX bytes:0 (0.0 B) TX bytes:0 (0.0 B)
cat /etc/network/interfaces
auto lo iface lo inet loopback auto eth0 iface eth0 inet static address 192.168.23.133 netmask 255.255.255.0 broadcast 192.168.23.255 gateway 192.168.23.17
对此有何建议？
更新
~$ ping google.com ping: unknown host google.com ~$ route -n Kernel IP routing table Destination Gateway Genmask Flags Metric Ref Use Iface 0.0.0.0 192.168.23.17 0.0.0.0 UG 0 0 0 eth0 169.254.0.0 0.0.0.0 255.255.0.0 U 1000 0 0 eth0 192.168.23.0 0.0.0.0 255.255.255.0 U 0 0 0 eth0 192.168.122.0 0.0.0.0 255.255.255.0 U 0 0 0 virbr0 cat /etc/resolv.conf # Dynamic resolv.conf(5) file for glibc resolver(3) generated by resolvconf(8) # DO NOT EDIT THIS FILE BY HAND -- YOUR CHANGES WILL BE OVERWRITTEN