Assign a range of IPs to CentOS/Fedora

/etc/sysconfig/network-scripts/ifcfg-eth0-range1

IPADDR_START=X.X.X.X
IPADDR_END=X.X.X.X
NETMASK=X.X.X.X
CLONENUM_START=100
ARPCHECK=no

Then restart the network:

service network restart


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