netfilter@xxxxxxxxxxxxxx a écrit : > > As far as the virtual machines. All three test systems are virtual. > They run RH5 using Mac with parallels. The routing tables are below. [Nothing unexpected in the routing tables] How are the virtual machine network interfaces connected together ? Did you create two separate virtual links ? One explanation could be that all interfaces are connected to the same virtual link, so traffic coming to the router could arrive at any of its two interfaces. -- To unsubscribe from this list: send the line "unsubscribe netfilter" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html