Ethereal-users: [Ethereal-users] Re: tethereal filters on one adapter, not on another

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From: Paul Wozney <paulwozney@xxxxxxxxx>
Date: Thu, 25 Nov 2004 11:11:26 -0800
Further analysis shows that perhaps eth0 is not working as expected.

# tethereal -D
1. eth1
2. any (Pseudo-device that captures on all interfaces)
3. lo

eth0 does not even show up here!

And yet,

# ifconfig eth0
eth0      Link encap:Ethernet  HWaddr 00:08:74:0C:5D:74
          UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
          RX packets:1282771 errors:82115 dropped:0 overruns:1 frame:82115
          TX packets:1 errors:0 dropped:0 overruns:0 carrier:1
          collisions:0 txqueuelen:1000
          RX bytes:671390837 (640.2 Mb)  TX bytes:60 (60.0 b)
          Interrupt:11 Base address:0xdc80

The interface is up.

Ahh.  I configure the eth0 with an IP address, and:

# tethereal -D
1. eth0
2. eth1
3. any (Pseudo-device that captures on all interfaces)
4. lo

Unfortunately, despite that it's now listed it still does not capture!

# tethereal -i eth0 -f "net 10.1.1"
Capturing on eth0
0 packets captured

eth0 does capture, I can grep out all kinds of data like this:

# tethereal -i eth0 |grep "10.1.1"

Paul