TKIP: replay detected: WTF?

[Mark Lord <lkml@rtr.ca>]

Lately I've been seeing my kernel logs spammed by these events:

Feb 17 18:38:48 localhost kernel: TKIP: replay detected: STA=00:13:46:16:96:b8 previous TSC ffff80723500 received TSC 000000000001
Feb 17 18:38:48 localhost kernel: TKIP: replay detected: STA=00:13:46:16:96:b8 previous TSC ffff80723500 received TSC 000000000002
Feb 17 18:38:48 localhost kernel: TKIP: replay detected: STA=00:13:46:16:96:b8 previous TSC ffff80723500 received TSC 000000000003
Feb 17 18:38:48 localhost kernel: TKIP: replay detected: STA=00:13:46:16:96:b8 previous TSC ffff80723500 received TSC 000000000004
Feb 17 18:38:48 localhost kernel: TKIP: replay detected: STA=00:13:46:16:96:b8 previous TSC ffff80723500 received TSC 000000000005
Feb 17 18:38:48 localhost kernel: TKIP: replay detected: STA=00:13:46:16:96:b8 previous TSC ffff80723500 received TSC 000000000006
Feb 17 18:38:48 localhost kernel: TKIP: replay detected: STA=00:13:46:16:96:b8 previous TSC ffff80723500 received TSC 000000000007
Feb 17 18:38:48 localhost kernel: TKIP: replay detected: STA=00:13:46:16:96:b8 previous TSC ffff80723500 received TSC 000000000008
Feb 17 18:38:48 localhost kernel: TKIP: replay detected: STA=00:13:46:16:96:b8 previous TSC ffff80723500 received TSC 000000000009
Feb 17 18:38:48 localhost kernel: TKIP: replay detected: STA=00:13:46:16:96:b8 previous TSC ffff80723500 received TSC 00000000000a
Feb 17 18:38:54 localhost kernel: printk: 1 messages suppressed.
Feb 17 18:38:54 localhost kernel: TKIP: replay detected: STA=00:13:46:16:96:b8 previous TSC ffff80723500 received TSC 00000000000c
Feb 17 18:38:58 localhost kernel: printk: 2 messages suppressed.
Feb 17 18:38:58 localhost kernel: TKIP: replay detected: STA=00:13:46:16:96:b8 previous TSC ffff80723500 received TSC 00000000000f
Feb 17 18:39:07 localhost kernel: printk: 2 messages suppressed.
Feb 17 18:39:07 localhost kernel: TKIP: replay detected: STA=00:13:46:16:96:b8 previous TSC ffff80723500 received TSC 000000000012
Feb 17 18:39:08 localhost kernel: TKIP: replay detected: STA=00:13:46:16:96:b8 previous TSC ffff80723500 received TSC 000000000013
Feb 17 18:39:25 localhost kernel: printk: 1 messages suppressed.
Feb 17 18:39:25 localhost kernel: TKIP: replay detected: STA=00:13:46:16:96:b8 previous TSC ffff80723500 received TSC 000000000015
Feb 17 18:39:26 localhost kernel: TKIP: replay detected: STA=00:13:46:16:96:b8 previous TSC ffff80723500 received TSC 000000000016
Feb 17 18:39:27 localhost kernel: TKIP: replay detected: STA=00:13:46:16:96:b8 previous TSC ffff80723500 received TSC 000000000017
Feb 17 18:39:35 localhost kernel: TKIP: replay detected: STA=00:13:46:16:96:b8 previous TSC ffff80723500 received TSC 000000000018
Feb 17 18:39:36 localhost kernel: TKIP: replay detected: STA=00:13:46:16:96:b8 previous TSC ffff80723500 received TSC 000000000019

This is with the various 2.6.16-rc*-git* kernels, and possibly older 2.6.15 series as well.
They always seem to arrive in large bursts, like the bunch shown above.  Using wifi
over ipw2200 to a WPA2 AP.

Either this is "normal" behaviour, in which case the code should NOT be spamming me,
or something is broken, in which case.. what?

Cheers
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