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TKIP error messages with WPA wireless on Etch



Hi,

I recently installed Etch on my Dell Latitude D610 laptop. Wireless seems to be
working fine, but I am getting TKIP error messages in the syslog every few seconds.
Does anyone know what these error messages are? Following is an excerpt from the syslog
(with numbers changed):

Apr 13 20:40:55 localhost kernel: printk: 11 messages suppressed.
Apr 13 20:40:55 localhost kernel: TKIP: ICV error detected: STA=00:12:e8:d3:80:21
Apr 13 20:40:55 localhost last message repeated 2 times
Apr 13 20:41:01 localhost kernel: printk: 8 messages suppressed.
Apr 13 20:41:01 localhost kernel: TKIP: received packet without ExtIV flag from 00:12:e8:7b:15:44
Apr 13 20:41:15 localhost kernel: printk: 5 messages suppressed.
Apr 13 20:41:15 localhost kernel: TKIP: ICV error detected: STA=00:12:e8:d3:80:21
Apr 13 20:41:16 localhost last message repeated 2 times
Apr 13 20:41:21 localhost kernel: printk: 3 messages suppressed.
Apr 13 20:41:21 localhost kernel: TKIP: received packet without ExtIV flag from 00:12:e8:7b:15:44

The numbers look like MAC addresses, and several different ones show up. None of them
are the address of my router or wireless card. Are they MAC addresses? If so, 
maybe they are coming from other wireless networks in range. If so, how can I 
prevent them from being received? Is it a problem to have messages like this being
written to the syslog every few seconds?

Some other background information:

My home network has
a wireless access point that uses WAP encryption with TKIP. The wireless card
in my laptop is a "Broadcom Corporation BCM4306 802.11b/g Wireless LAN Controller
(rev 03)" (from lspci output).

I installed wpasupplicant and bcm43xx-fwcutter, and placed the following entry
in my /etc/network/interfaces file: (ssid and psk key altered, of course)

allow-hotplug eth1
iface eth1 inet dhcp
wpa-ssid thessid
wpa-key_mgt WPA-PSK
wpa-proto WPA
wpa-pairwise TKIP
wpa-group TKIP
wpa-psk thekey

Thanks,
Mark



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