i esplain again very well my probleme
my mikrotik router was configure;on my mikrotik router i was able to ping http://www.yahoo.fr .
i was able to make traceroute to http://www.yahoo.fr
i was able to ping my DNS
but in my mikrotik router is commande line and have two network cart
one connect in public network and another owne in local network.
i connect a host in a loca netwok . in that host connect in local network in was able to browsing in internet.
but in ping the local interface of mikrotik
i ping public interface of micritk
i think the explication is very clear
i need a help