cat /etc/sysconfig/network-scripts/ifcfg-eth3
DEVICE=eth3
HWADDR=64:31:50:4B:52:4E
TYPE=Ethernet
ONBOOT=yes
NM_CONTROLLED=no
BOOTPROTO=none
BRIDGE=br2

cat /etc/sysconfig/network-scripts/ifcfg-br2
DEVICE=br2
ONBOOT=yes
TYPE=Bridge
NM_CONTROLLED=no
BOOTPROTO=none

cat /etc/rc.local
#add it to your /etc/rc.local file:
for task in /etc/rc.local.d/*
do
# ( Read more... )