[Click] Gateway problem (mazu-nat.click)

[gael]

Hi,
I tried to use the mazu-nat.click script in order to make a gateway :

Computer A (10.0.0.2)<-->[eth1(10.0.0.1) linux Click Router eth0(192.168.1.1)] <-->Computer B (192.168.1.2)
but when I do a ping from the computer B, there isn't reply on the computer A.  
I installed sniffers (Ethereal) on each computers I saw that :
computer B : 4 packets ICMP Echo (ping) request src:192.168.1.2 
dst:10.0.0.1 
computer A : nothing 
Click Router : (eth1 & eth0) 4 packets same as computer A  

I though that the Linux router table was broken but I removed click 
module and I could ping both computer A->B and B->A. 

Does anybody manage to work the mazu script ? or I forgot something ?

Thinks, 
 
SCHINKEL Gael