I have a laptop with Ubuntu 11.04. Failed to connect my home wireless network, which is composed of a modem and a Netgear router.
wlan0 Link encap:Ethernet HWaddr 00:24:d6:07:2b:a2 UP BROADCAST MULTICAST MTU:1500 Metric:1 RX packets:30238 errors:0 dropped:0 overruns:0 frame:0 TX packets:24005 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:1000 RX bytes:26945081 (26.9 MB) TX bytes:3169731 (3.1 MB) wlan0:avahi Link encap:Ethernet HWaddr 00:24:d6:07:2b:a2 inet addr:169.254.6.188 Bcast:169.254.255.255 Mask:255.255.0.0 UP BROADCAST MULTICAST MTU:1500 Metric:1
iwconfig showing :
wlan0 IEEE 802.11abgn ESSID:"mywirelessnetwork" Mode:Managed Access Point: Not-Associated Tx-Power=15 dBm Retry long limit:7 RTS thr:off Fragment thr:off Power Management:off
I do not quite understand how the virtual interface wlan0:avahi appeared. My guess was, my request
sudo dhclient wlan0 failed to get a valid ip, although I did not get any error message from running that command. I executed
sudo dhclient wlan0 again, but still no error message or network connection.
Later today, I tried to connect to a public wireless network. Still got the same error. But when I reboot my machine, no such problems.
I am confused by the wired situations. Is there anything wrong with my network configuration? What should I do if I encounter similar problems in future?