How to eliminate ifcfg-Auto_Ethernet at boot

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I had read somewhere that with RHEL 7.0 there's a kernel boot parameter net.ifparms=0 that will suppress the generation of the ifcfg-Auto_Ethernet entries for the NICs installed in a machine., and essentially "force" the system to use the older eth0, eth1 definitions. I tried by updating the /etc/default/grub e.g.

GRUB_TIMEOUT=5
GRUB_DISTRIBUTOR="$(sed 's, release .*$,,g' /etc/system-release)"
GRUB_DEFAULT=saved
GRUB_DISABLE_SUBMENU=true
GRUB_TERMINAL_OUTPUT="console"
GRUB_CMDLINE_LINUX="rd.lvm.lv=FW_L7/root vconsole.font=latarcyrheb-sun16 rd.lvm.lv=FW_L7/swap crashkernel=auto  vconsole.keymap=us rhgb quiet biosdevname=0 net.ifnames=0"
GRUB_DISABLE_RECOVERY="true"

Then I rebooted the system, (restart) however it apparently did not work.
Any other ideas on how to eliminate the generation of ifcfg-Auto_Ethernet entries at boot ?

Thanks
Guy Rich

2U

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