Destination and Genmask are used to figure out which rules are a match for the destination address of the outgoing packet. Interface is used to decide what communication device on the machine to send it through. Gateway is the address of the device on the same network that it will send the packet to (through).

WHAT IS routing table in Linux?

On Linux and UNIX systems, information on how packets are to be forwarded is stored in a kernel structure called a routing table. You need to manipulate this table when configuring your computer to talk to other computers across a network. The routing table can be used for both static and dynamic routing.

What is metric in route Linux?

: The default metric for a route in the Linux kernel is 0, meaning the highest priority. : If this option is not specified the metric for inet6 (IPv6) address family defaults to ‘1’, for inet (IPv4) it defaults to ‘0’.