Option 82 DHCP Snooping + Freeradius auth of DHCP requests

[Denis Iskandarov]

Also I did this check from daloradius:

Executed:
echo "User-Name='00:0C:42:40:40:38',User-Password=" | radclient -c '1'
-n '3' -r '3' -t '3' -x '127.0.0.1:1812' 'auth' 'testing123' 2>&1

Results:
Sending Access-Request of id 3 to 127.0.0.1 port 1812
User-Name = "00:0C:42:40:40:38"
rad_recv: Access-Reject packet from host 127.0.0.1 port 1812, id=3, length=20