The following table describes the Flags column in the netstat -rn output.
Flag | Description |
---|---|
U | Up—Route is valid |
G | Gateway—Route is to a gateway router rather than to a directly connected network or host |
H | Host name—Route is to a host rather than to a network, where the destination address is a complete address |
R | Reject—Set by ARP when an entry expires (for example, the IP address could not be resolved into a MAC address) |
D | Dynamic—Route added by a route redirect or RIP (if routed is enabled). |
M | Modified—Route modified by a route redirect |
C | Cloning—A new route is cloned from this entry when it is used |
L | Link—Link-level information, such as the Ethernet MAC address, is present |
S | Static—Route added with the route command |