Can't ping from within arduino@root

Hi,
I realized firstly that I cannot update opkg and then I realized I cannot even ping.
Here's the series of commands I have entered. I have even restarted httpd server but yet can't ping. Any idea?

root@Arduino:~# ifconfig
eth1 Link encap:Ethernet HWaddr 90:A2:DA:F8:3D:75
UP BROADCAST MULTICAST MTU:1500 Metric:1
RX packets:0 errors:0 dropped:0 overruns:0 frame:0
TX packets:0 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:1000
RX bytes:0 (0.0 B) TX bytes:0 (0.0 B)
Interrupt:4

lo Link encap:Local Loopback
inet addr:127.0.0.1 Mask:255.0.0.0
UP LOOPBACK RUNNING MTU:16436 Metric:1
RX packets:1296 errors:0 dropped:0 overruns:0 frame:0
TX packets:1296 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:0
RX bytes:88128 (86.0 KiB) TX bytes:88128 (86.0 KiB)

wlan0 Link encap:Ethernet HWaddr 90:A2:DA:F0:3D:75
inet addr:192.168.240.1 Bcast:192.168.240.255 Mask:255.255.255.0
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
RX packets:356 errors:0 dropped:31 overruns:0 frame:0
TX packets:333 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:1000
RX bytes:39919 (38.9 KiB) TX bytes:49389 (48.2 KiB)

root@Arduino:~#

root@Arduino:~# opkg update
Downloading http://download.linino.org/linino_distro/master/latest/packages/Packages.gz.
Downloading http://download.linino.org/linino_distro/master/latest/packages/Packages.sig.
Signature check failed.
Remove wrong Signature file.
Collected errors:

root@Arduino:~# opkg install bind-dig
Unknown package 'bind-dig'.
Collected errors:

  • opkg_install_cmd: Cannot install package bind-dig.

root@Arduino:~# ping 8.8.8.8.8
ping: bad address '8.8.8.8.8'

root@Arduino:~# vi /etc/config/network

config interface 'loopback'
option ifname 'lo'
option proto 'static'
option ipaddr '127.0.0.1'
option netmask '255.0.0.0'

config interface 'lan'
option proto 'static'
option ipaddr '192.168.240.1'
option netmask '255.255.255.0'

config interface 'wan'
option ifname 'eth1'
option proto 'dhcp'
option metric '10'

First, 8.8.8.8.8 is an invalid IP address.

try:

ping 8.8.8.8

If that is successful, then you have networking and apparently a valid route.

If not, then print your routing information:

route -n