[CentOS] OT: Avoiding redirection loops with iptables tproxy

Hi all,

  I have a hard trouble with my iptables rules. I need to create a 
netfilter config so that it does not redirect connections from a daemon 
(like for example a squid proxy)  to the original destinations. 
Searching info about that, some ways to do that include to limit the 
redirection rules to the incoming traffic interface, another to limit it 
to a certain range of source IPs or to explicitly exclude connections 
originating on localhost (CentOS 6 x86_64 fully patched).

  Any help or sample please??