Giving Raspberry pi net connection

2013-10-29

The static IP address addition on SD card seems not connecting RPi (Raspberry Pi) to the Internet (1)

A possible way is to remove DHCP and invoke static
So the command netstat -nr will show up only the
```
Destination Gateway  Genmask Flags MSS 
192.168.1.0 0.0.0.0 255.255.255.0 U 0
Window  irtt   Iface
0 0 eth0
```
without UG flag (from http://raspberrypi.stackexchange.com/questions/7146/static-local-ip-gateway-config-on-startup-issues) so no gateway, no way to access the Internet

The solution is to add the following entries

pi@raspberrypi ~ $ cat /etc/network/interfaces
auto lo
iface lo inet loopback
iface eth0 inet static
address 192.168.1.104
netmask 255.255.255.0
gateway 192.168.1.1
allow-hotplug wlan0
iface wlan0 inet manual
wpa-roam /etc/wpa_supplicant/wpa_supplicant.conf
iface default inet dhcp

and

pi@raspberrypi ~ $ cat /etc/resolv.conf
DNS 218.248.240.179
nameserver 218.248.240.179

and

sudo /sbin/route add -net 0.0.0.0 gw 192.168.1.254 eth0
sudo /sbin/route add -net 0.0.0.0 gw 192.168.1.1 eth0

It makes three lines in netstat table with these gateway address. After this, the Internet will be getting. now the netstat -nr will look like

pi@raspberrypi ~ $ netstat -nr
Kernel IP routing table
Destination Gateway   Genmask Flags MSS Window  irtt Iface
0.0.0.0 192.168.1.1 0.0.0.0 UG 0 0 0 eth0
0.0.0.0 192.168.1.254 0.0.0.0 UG 0 0 0 eth0

192.168.1.0 0.0.0.0 255.255.255.0 U 0 0 0 eth0

References: