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网络不可达

tag-icon • tag-icon linux networking routing
网络不可达

我有点迷失方向，无法解决这个问题。

这是一台在 Google Compute Engine 上即将推出的机器。

当我尝试访问网络时，它显示“网络无法访问”。

网络似乎正常运行，因为 eth0 具有从 Google DHCP 服务器获取的网络地址。以下是“ifconfig”和“route”的输出

Google 表示这台机器所在的网络是 10.240.0.0/16，网关是 10.240.0.1

route -n 的输出

Kernel IP routing table
Destination     Gateway         Genmask         Flags Metric Ref    Use Iface
127.0.0.1       *               255.255.255.255 UH    0      0        0 lo

ifconfig -a 的输出

dummy0    Link encap:Ethernet  HWaddr 72:E6:19:7F:A1:8E  
          BROADCAST NOARP  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)

eth0      Link encap:Ethernet  HWaddr 42:01:0A:F0:00:02  
          inet addr:10.240.0.2  Bcast:10.255.255.255  Mask:255.255.255.255
          UP BROADCAST MULTICAST  MTU:1500  Metric:1
          RX packets:2 errors:0 dropped:0 overruns:0 frame:0
          TX packets:1 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:1000 
          RX bytes:1102 (1.0 KiB)  TX bytes:342 (342.0 B)

ip_vti0   Link encap:UNSPEC  HWaddr 00-00-00-00-FF-FF-00-00-00-00-00-00-00-00-00-00  
          NOARP  MTU:1364  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)

lo        Link encap:Local Loopback  
          inet addr:127.0.0.1  Mask:255.0.0.0
          UP LOOPBACK RUNNING  MTU:65536  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)

tunl0     Link encap:UNSPEC  HWaddr 00-00-00-00-00-00-00-00-00-00-00-00-00-00-00-00  
          NOARP  MTU:1480  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)

答案1

以下有效：

sleep 10 (not sure if this line matters but it seems the system needs a few seconds for something to complete?)
sudo udhcpc
sudo route add -net 10.240.0.0 netmask 255.255.0.0 dev eth0
sudo route add default gw 10.240.0.1 eth0

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