im tring to make a nat, so i create a rule to test:

iptables -t nat -I PREROUTING -p icmp -s 192.168.XX.yy -d 192.168.XX.zz -j DNAT --to 192.168.ZZ.xx

and them i ping the nat machine to see if its is working, but when i ue wireshark to check the 2 interfaces. The fist show the icmp request,but in the other is not showing anything. any idea what could be?

im new on iptables, so a really need some help.