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Troubleshooting Network Problems
The most common problem is with how CentOS 6 handles interface discovery, it wants to hang onto MAC addresses which of course in a virtual environment you want managed by the Hypervisor.
Run If you do not see an interface called eth0 when you run the command "ifconfig -a", the result should look like this:
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[root@nmis64 ~]# ifconfig -a
eth0 Link encap:Ethernet HWaddr 00:0C:29:E8:CF:F9
inet addr:192.168.1.42 Bcast:192.168.1.255 Mask:255.255.255.0
inet6 addr: 2001:470:1f05:5a0:20c:29ff:fee8:cff9/64 Scope:Global
inet6 addr: fe80::20c:29ff:fee8:cff9/64 Scope:Link
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
RX packets:6640287 errors:0 dropped:0 overruns:0 frame:0
TX packets:4282058 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:1000
RX bytes:974072080 (928.9 MiB) TX bytes:606513312 (578.4 MiB)
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:2337305 errors:0 dropped:0 overruns:0 frame:0
TX packets:2337305 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:0
RX bytes:371309377 (354.1 MiB) TX bytes:371309377 (354.1 MiB) |
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If you do not see an interface called eth0 then run this command and reboot your VM.
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rm -f /etc/udev/rules.d/70-persistent-net.rules
reboot |
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