A self proclaimed security architect told me that there were hacking attacks where the hacker “obfuscated” the destination IP address to confuse the router into forwarding the packet out all of its interfaces and subsiquently the packet would live forever. In my limited knowledge I was a bit sceptical. Since he would not explain exactly what was in the destination address field of the header, my question is this; what would a router do with a packet that had either no address or something other than an unicast/multicast address as its destination IP?
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