How the Ubuntu system looks at your current routing table

The NETSTAT-NR command displays the contents of the routing table. A gateway-0.0.0.0 network is usually connected directly to a network device. Because the gateway is not required on its own direct-attached device, the 0.0.0.0 gateway address is normal. The destination address is 0.0.0.0 routing is your default gateway.

In this example, there are two gateways, the default and the 255.255.255.255 are usually added by the DHCP server. In this case, the Bigbogy server is also a DHCP service

Service.

[Root@bigboy tmp]# netstat-nrkernel IP routing tabledestination Gateway genmask Flags MSS Window Irtt Iface255.255.255.255 0.0.0.0 255.255.255.255 0 0 wlan0192.168.1.0 0.0.0.0 255.255.255.0 u 0 0 wlan0127.0.0.0 0.0.0.0 255.0.0.0 u 40 0 0 lo0.0.0.0 192.168.1.1 0.0.0.0 UG 0 0 Wlan0[root@bigboy tmp]# In this example, there are multiple gateways responsible for transferring data from different network devices to different destinations. [Root@bigboy tmp]# netstat-nrkernel IP routing table destination Gateway genmask Flags MSS Window Irtt Iface172.16.68.64 172.16.69.193 255.255.255.224 ug 0 0 eth1172.16.11.96 172.16.69.193 255.255.255.224 UG 0 0 eth1172.16.68.32 172.16.69.193 255.255.255.224 ug 0 0 eth1172.16.67.0 172.16.67.135 255.255.255.224 UG 0 0 eth0172.16.69.192 0.0.0.0 255.255.255.192 U 0 0 eth1172.16.67.128 0.0.0.0 255.255.255.128 u 0 0 eth0172.160.0 172.16.67.135 255.255.0.0 UG 40 0 0 eth0172.16.0.0 172.16.67.131 255.240.0.0 ug 0 0 eth0127.0.0.0 0.0.0.0 255.0.0.0 U 0 0 lo0.0.0.0 172.16.69.193 0.0.0.0 UG 0 0 Eth1[root@bigboy tmp]#