Hello community,
I have a question regarding default gateway. If L2 switch (the same applies to L3 switch & Router with disabled routing and any other host with IP which can't route) doesn't have default gateway configured, how it will reply to packets which destined to the network which is not directly connected to it? I think, switch will consider this destination as directly connected network and will ARP for this destination and if there is device witch knows how to get to that network and have Proxy ARP enabled, will reply with its MAC address. What about situations, when Switch (or any other host) has more than one interface with IP (same conditions: IP routing disabled, no default gateway configured, destination network is not directly connected), from which interface it sends ARP requests?
