generic /etc/dhclient.conf not working

Hello
Im trying to use the generic /etc/dhclient.conf file as mention in
/etc/sysconfig/network-scripts/ifup-eth file
But the code seems incorrect because it never uses the generic file.
I do not want to generate dhcleint.conf for each device.
Am I missing something or this is a bug?

# allow users to use generic '/etc/dhclient.conf' (as documented in manpage!)
# if per-device file doesn't exist or is empty
if [ -s /etc/dhcp/dhclient-${DEVICE}.conf ]; then
   DHCLIENTCONF="-cf /etc/dhcp/dhclient-${DEVICE}.conf";
elif [ -s /etc/dhclient-${DEVICE}.conf ]; then
   DHCLIENTCONF="-cf /etc/dhclient-${DEVICE}.conf";
else
   DHCLIENTCONF='';
Fi;