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Editorial Team
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Asked: 2026-05-25T10:15:30+00:00

I’m using virtualbox and trying to get my centos6 virtual machine onto the network.

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I’m using virtualbox and trying to get my centos6 virtual machine onto the network. Virtualbox is running on XP. In the virtual box settings I’ve enabled network adapter 1, selected the bridged adapter and selected the default hardware. On the virtual machine I’ve edited configuration files as follows (making sure that the mac address / hardware address matches the adapters mac address from the virutalbox settings): 

# cat /etc/sysconfig/network-scripts/ifcofg-eth0
DEVICE="eth0"
BOOTPROTO="none
MACADDR="08:00:27:7D:A8:DC"
ONBOOT="yes"
IPADDR=10.0.20.10
GATEWAY=255.0.0.55
# cat /etc/sysconfig/network
NETWORKING=yes
HOSTNAME=dev.host.com
NETOWRKING_IPV6=no
GATEWAY=10.0.0.55
# cat /etc/sysconfig/networking/devices/ifcfg-eth0
DEVICE=eth0
BOOTPROTO=none
HWADDR=08:00:27:7D:A8:DC
ONBOOT=yes
NETMASK=255.0.0.0
IPADDR=10.0.20.10
GATEWAY=10.0.0.55
TYPE=Ethernet

When i restart networking I get the following:

# /etc/init.d/network restart
Shutting down loopback interface:
Bringing up loopback interface:
Bringing up interface eth0: Device eth0 does not seem to be present, delaying initialization.

eth0 never comes up and obviously I’ve got no access to / from the network.

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1 Answer

  1. Editorial Team

    There was a rule in /etc/udev/rules.d/ that was associating an old mac address from the cloned machine with eth0. I edited the rule (/etc/udev/rules.d/70-persistant-net.rules), to use the new mac address virtualbox generated when I enabled the network adapter.

    eth0 is up and running – I can access the network. (thanks to the centos forum).

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