#Add VLAN 0 (PXE) interface to PXE bridge
echo "${blue}Checking whether VLAN 0 (PXE) interface ${pxe_interface} is added to PXE bridge ${pxe_bridge} exists${reset}"
if ! brctl show ${pxe_bridge} 2>&1 | grep ${pxe_interface}; then
#Add VLAN 0 (PXE) interface to PXE bridge
echo "${blue}Checking whether VLAN 0 (PXE) interface ${pxe_interface} is added to PXE bridge ${pxe_bridge} exists${reset}"
if ! brctl show ${pxe_bridge} 2>&1 | grep ${pxe_interface}; then