squid and apt

[Pol Hallen <deben@fuckaround.org>]

Hi all

I've squid with transparent proxy, why linux clients has problems with 
apt? (apt-get update)

Err http://mirrordirector.raspbian.org wheezy/non-free armhf Packages
  400  Bad Request

on every clients I've:

iptables -t nat -A OUTPUT -p tcp --dport 80 -j DNAT --to-destination ip:port

Do I need set to /etc/apt/... the proxy to solve the issue?

thanks

Pol