Linux cannot access the Internet-Linux general technology-Linux technology and application information. The following is a detailed description. Run ifconfig-eth0 in the system.
When ifconfig is executed, only basic lo information is displayed, but eth0 information is not displayed.
For example:
[Root @ localhost ~] # Ifconfig
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: 16436 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 information is not displayed.
As a result, the network cannot be connected now.
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