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  • Hirofumi Takahashi thinks this is interesting:

Directing a static route to an exit broadcast interface without specifying the next-hop address can cause an excessive amount of traffic on the broadcast network, and also might eat up the router’s memory. For example, look at Tigger’s ip route E0 command. The router assumes is directly connected, as we have seen from the route table. Therefore, when attempting to route to any address on the subnet, the router sends an ARP request to find the MAC address to which to forward the packet. Each attempt to reach an address on the network, whether the destination is valid or not, will result in an ARP request, an ARP response if a rou...


Cover of Routing TCP/IP, Volume 1, 2/e


Using Static Route with an exit interface on the broadcast link