I'm being desturbed by some sort of broadcast packets. How do I filter
out the following packet's (as listed by tcpdump).

Kernel filter, protocol ALL, datagram packet socket
tcpdump: listening on eth0
22:01:19.428142 M 0:90:ab:f0:17:c8 > 1:0:0:0:0:0 802.1d ui/C
<--similar packets removed-->
22:01:41.017205 M 0:90:ab:f0:17:c8 > 1:0:0:0:0:0 802.1d ui/C
22:01:42.869501 B arp who-has 192.168.80.213 tell login.stofanet.dk
22:01:43.000079 M 0:90:ab:f0:17:c8 > 1:0:0:0:0:0 802.1d ui/C
22:01:44.129155 B arp who-has 192.168.95.84

Type of my connection (short):
My ISP is Stofanet in Denmark. It's a cable modem teknologi connected to
an ethernet card in the computer. Basically this means that the computer
is connected all the time having a fixed lokal 192.168.x.y address, but
to get on to the outside world one has to logon/off the gateway.

The logon/off part is what I need diald for, and it can be done. I tried
a two computer setup with masquerade (ipchains) on the cable modem
connected computer. Diald was installed on eth0 device on the second
computer, far away from those nasty packets.  And everything works fine,
but as you might have guesed, what I really need is diald to be running
on the computer connected to the cable modem.

So, how do I filter those packets, and what type of data is flowing
around? To me it looks like that the cable modem recieves a packet every
other second, and it's not comming from my own computer.

/Kim







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