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I have a RHEL server with 4 NICS. I bound eth2 and eth3 as bond0.

However, I don't know how to unbind the two NICs, so I just deleted ifcfg-bond0. Then I entered service network restart, and after that, I'm unable to find eth3. It's not loaded at all.

I've tried to reboot my server, but it's still not working...

migrated from stackoverflow.com Dec 26 '12 at 16:34

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Remove MASTER=bond0 from eth2/3 and also remove, also remove alias bond0 bonding from /etc/modprobe.conf

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In your ifcfg-eth2 and ifcfg-eth3 files under /etc/sysconfig/network-scripts, remove these two lines:

MASTER=bond0
SLAVE=yes

Restart your network service and everything should be ok.

Dont forget to clean up, remove any line having a bond-related configuration in your /etc/modprobe.conf

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