ap_bridge_packets between two interfaces

[LQ]

Hi, i have two wireless adapters (hostap 0.0.3 - kernel 2.4.21 - iptables)
in the same pc (wlan0, wlan1).

The problem is that i don?t want to allow traffic between the clients.
for that reason i ?m using:
prism2_param wlan0 ap_bridge_packets 0
and
prism2_param wlan1 ap_bridge_packets 0

If Client A and Client B are connected to Wlan0... it works fine..
but when the Client A is connected to Wlan0 and Client B is connected to
Wlan1 they can see each other !!

I used iptables to block icmp traffic (with ap_bridge_packets 0) with no
results !

Thanks in advance.
Pablo.