i m running squid 2.5 stable 7 and the users are connected with MAC based (acl ban arp

"/usr/local/squid/etc/xxx.dat").
now i want to bind each MAC with its ip address so that if any client changes its IP or MAC

address, he would not be able to surf the internet. for example a user has an ip 10.11.3.20

and his MAC of LAN is AB-CD-EF-GH-IJ-KL, and if he changes ip tp 10.11.3.21, he should not b

able to sufr.
thanx