feature question

well here is what i need to do.
i have a proxy running that is used by diferent subnetworks.
each subnetwork can use it or exit directly to the net.
if they exit directly they are controled by a packeteer.
if they use the proxy they escape the control .
Of course i could control rate limit at the proxy , but what i really want
is one of the following features :

1 - the machine running the proxy has several ips on the same network
i would like to control some acl to tell them if you belong to the following
acl than use the following source ip to obtain the file requested
that way i could include those ip in the packeteer and administer bandwidth
in one single place.

2 - use the same method but instead of having ips using the TOS field.

is there something like this in squid or are ther any plans to include one of
these features in an future release ?

thank you

Joao Carvalho

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Joao de Deus Carvalho         Phone: +351-966137272      Fax: +351-225574210 
Faculdade de Engenharia da            Email: Joao.Carvalho@up.pt
Universidade do Porto