The Default Route

A default route requires zero or no bits need to match between the destination IP address and the default route

The default route specifies a next-hop router to use when the routing table does not contain a specific route that matches the destination IP address

A default route can be either a static route or learned automatically from a dynamic routing protocol

A default route has an IPv4 route entry of 0.0.0.0/0

or

an IPv6 route entry of ::/0