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I can't bring eth0 down or up with ifdown or ifup

ifdown: interface eth0 not configured

but ifconfig shows me

eth0      Link encap:Ethernet  HWaddr 00:16:3e:4d:09:5f
          inet addr:192.168.0.3  Bcast:192.168.0.255  Mask:255.255.255.0

It's a xen guest i just setup, in another guest it does work, how can i overcome this?

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  • 1
    1) What Linux Distribution are you using? 2) How are you running the command? Feb 26, 2013 at 15:37

2 Answers 2

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i just solved this, i had a gateway set which wasn't in range of the subnet but i thought i could reload the config with ifdown and ifup. after setting the correct gateway and rebooting it worked.

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Compare the files /etc/sysconfig/network/ifcfg-eth0 on both systems. Maybe something is missing there.

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  • /etc/sysconfig is for Redhat/Centos
    – Dokbua
    Jul 7, 2017 at 17:33

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