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configure ifconfig vhosts permanently

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linux-howto

https://www.centos.org – Create /etc/sysconfig/network-scripts/ifcfg-eth0:0 (etc) files for each one. You can base it off the existing ifcfg-eth0 file and remove the HWADDR= line and amend the rest of the details to match ... [by TrevorH] (Distributions)