ip-route-add: add page (#15994)

pages/linux/ip-route-add.md

@@ -0,0 +1,20 @@
+# ip route
+
+> Add a new networking route.
+> More information: <https://manned.org/ip-route>.
+
+- Add a default route using gateway forwarding:
+
+`sudo ip {{[r|route]}} {{[a|add]}} default via {{gateway_ip}}`
+
+- Add a default route using `eth0`:
+
+`sudo ip {{[r|route]}} {{[a|add]}} default dev {{eth0}}`
+
+- Add a static route:
+
+`sudo ip {{[r|route]}} {{[a|add]}} {{destination_ip}} via {{gateway_ip}} dev {{eth0}}`
+
+- Add a route to a specific routing table:
+
+`sudo ip {{[r|route]}} {{[a|add]}} {{destination_ip}} dev {{eth0}} {{[t|table]}} {{ip}}`