Category:RaspberryPi

Autoboot the wlan0 wireless lan interface

root@raspberrypi:/# cat /etc/network/interfaces 
auto lo


iface lo inet loopback
iface eth0 inet dhcp


#iface wlan0 inet manual
#wpa-roam /etc/wpa_supplicant/wpa_supplicant.conf
autp wlan0
allow-hotplug wlan0
iface wlan0 inet dhcp
      wpa-ssid "<SSID>"
      wpa-psk "<PASSPHRASE>"


iface default inet dhcp

Assign a fixed IP address

Get the current IP address and other info

ifconfig -a

We're interested in these bits:

wlan0
          inet addr:192.168.1.15  Bcast:192.168.1.255  Mask:255.255.255.0

Get the router/gateway address

netstan -rn

We're interested in these bits:

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 wlan0

Now edit /etc/network/interfaces and replace the 'dhcp' with 'static' for the required interface

address 192.168.1.100
netmask 255.255.255.0
network 192.168.1.0
broadcast 192.168.1.255
gateway 192.168.1.1