Phantom network traffic reported in system monitor for madwifi driver.

[Miles Lane]

Hello,

I am seeing some very strange traffic reporting while using
my Atheros Communications, Inc. AR5005G 802.11abg NIC (rev 01).
This card is labeled as a Belkin "Wireless G Notebook Card".
Regardless, the card seems to work, but I am seeing some really
weird network activity.  I have tried checking the connection using
tcpdump.  One bizarre thing about these drivers is that they
create more that one device:

ath0      Link encap:Ethernet  HWaddr 00:11:50:70:FC:04
          inet addr:192.168.1.108  Bcast:192.168.1.255  Mask:255.255.255.0
          inet6 addr: fe80::211:50ff:fe70:fc04/64 Scope:Link
          UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
          RX packets:2943 errors:0 dropped:0 overruns:0 frame:0
          TX packets:2087 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:0
          RX bytes:3308943 (3.1 MiB)  TX bytes:329776 (322.0 KiB)

wifi0     Link encap:UNSPEC  HWaddr
00-11-50-70-FC-04-00-00-00-00-00-00-00-00-00-00
          UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
          RX packets:27260 errors:0 dropped:1962 overruns:0 frame:2003
          TX packets:2661 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:199
          RX bytes:4834375 (4.6 MiB)  TX bytes:402928 (393.4 KiB)
          Interrupt:11

I do see some traffic on wifi0:
tcpdump: WARNING: wifi0: no IPv4 address assigned
tcpdump: verbose output suppressed, use -v or -vv for full protocol decode
listening on wifi0, link-type IEEE802_11 (802.11), capture size 96 bytes
00:55:26.534947 Assoc Request[|802.11]
00:55:26.535596 Assoc Request[|802.11]
00:55:26.626749 Assoc Request[|802.11]
00:55:26.852718 Assoc Request[|802.11]
00:55:29.974943 Assoc Request[|802.11]
00:55:29.974988 Assoc Request[|802.11]
00:55:30.126994 Assoc Request[|802.11]
00:55:30.223122 Assoc Request[|802.11]
00:55:30.331295 Assoc Request[|802.11]
00:55:30.561877 Assoc Request[|802.11]

Sometimes this traffic is reported in system monitor as being
about 80% of the available bandwidth,

I seem to have a working connection through wifi0.\