I'm trying to access the internet on my laptop using wireless tethering option on my android phone. I'm able to make DNS queries and also ping my Gateway but i'm neither able to ping other sites like www.google.com nor access internet. Here is the output of some commands that might help in resolving the issue,
itachi@itachi-laptop:~$ uname -a
Linux itachi-laptop 3.2.0-34-generic #53-Ubuntu SMP Thu Nov 15 10:49:02 UTC 2012 i686 i686 i386 GNU/Linux
itachi@itachi-laptop:~$ cat /etc/lsb-release
DISTRIB_ID=Ubuntu
DISTRIB_RELEASE=12.04
DISTRIB_CODENAME=precise
DISTRIB_DESCRIPTION="Ubuntu 12.04.1 LTS"
itachi@itachi-laptop:~$ route -n
Kernel IP routing table
Destination Gateway Genmask Flags Metric Ref Use Iface
0.0.0.0 192.168.43.1 0.0.0.0 UG 0 0 0 wlan0
169.254.0.0 0.0.0.0 255.255.0.0 U 1000 0 0 wlan0
192.168.43.0 0.0.0.0 255.255.255.0 U 2 0 0 wlan0
itachi@itachi-laptop:~$ ping 192.168.43.1
PING 192.168.43.1 (192.168.43.1) 56(84) bytes of data.
64 bytes from 192.168.43.1: icmp_req=1 ttl=64 time=1.96 ms
64 bytes from 192.168.43.1: icmp_req=2 ttl=64 time=1.99 ms
64 bytes from 192.168.43.1: icmp_req=3 ttl=64 time=2.00 ms
^C
--- 192.168.43.1 ping statistics ---
itachi@itachi-laptop:~$ ping www.google.com
PING www.google.com (74.125.236.84) 56(84) bytes of data.
^C
--- www.google.com ping statistics ---
40 packets transmitted, 0 received, 100% packet loss, time 39313ms
itachi@itachi-laptop:~$ lspci -nnk | grep -iA2 net
0c:00.0 Network controller [0280]: Intel Corporation PRO/Wireless 4965 AG or AGN [Kedron] Network Connection [8086:4229] (rev 61)
Subsystem: Intel Corporation Device [8086:1120]
Kernel driver in use: iwl4965
itachi@itachi-laptop:~$ ifconfig wlan0
wlan0 Link encap:Ethernet HWaddr 00:21:5c:6a:3d:11
inet addr:192.168.43.224 Bcast:192.168.43.255 Mask:255.255.255.0
inet6 addr: fe80::221:5cff:fe6a:3d11/64 Scope:Link
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
RX packets:439 errors:0 dropped:0 overruns:0 frame:0
TX packets:3994 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:1000
RX bytes:64469 (64.4 KB) TX bytes:427656 (427.6 KB)
I'm able to access the internet when I directly connect via a usb-dongle and that is why i'm posting this question. When I try using wifi tethering though, I'm unable to ping nor access internet. Any help to resolve this issue would be much appreciated. Thanks.