ubuntu@arm:~/ros_catkin_ws$ ifconfig eth0 | grep inet
          inet addr:192.168.1.70  Bcast:192.168.1.255  Mask:255.255.255.0
          inet6 addr: fe80::5256:63ff:fec6:e6f7/64 Scope:Link
ubuntu@arm:~/ros_catkin_ws$ ping -c 5  google.com
PING google.com (74.125.227.66) 56(84) bytes of data.
64 bytes from dfw06s07-in-f2.1e100.net (74.125.227.66): icmp_req=1 ttl=58 time=52.8 ms
64 bytes from dfw06s07-in-f2.1e100.net (74.125.227.66): icmp_req=2 ttl=58 time=52.9 ms
64 bytes from dfw06s07-in-f2.1e100.net (74.125.227.66): icmp_req=3 ttl=58 time=51.4 ms
64 bytes from dfw06s07-in-f2.1e100.net (74.125.227.66): icmp_req=4 ttl=58 time=49.3 ms
64 bytes from dfw06s07-in-f2.1e100.net (74.125.227.66): icmp_req=5 ttl=58 time=49.4 ms

--- google.com ping statistics ---
5 packets transmitted, 5 received, 0% packet loss, time 4004ms
rtt min/avg/max/mdev = 49.316/51.226/52.978/1.594 ms
ubuntu@arm:~/ros_catkin_ws$