modprobe 8021q
  
ip link add link eth0 name eth0.40 type vlan id 40
ip link set dev eth0.40 up
ip link add link eth0 name eth0.21 type vlan id 21
ip link set dev eth0.21 up
ifconfig eth0.21 192.168.1.40 netmask 255.255.255.0

modprobe rina-irati-core irati_verbosity=7
modprobe rina-default-plugin
modprobe normal-ipcp
modprobe shim-eth-vlan  
  
/usr/local/irati/bin/ipcm -c /usr/local/irati/etc/ipcm.conf -l DEBUG &> log &