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Date: Tue, 20 Jan 2009 10:25:22 -0500
From: Steve Bertrand <steve@ibctech.ca>
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To: Wendell Martins Borges <wendell@ramenzoni.com.br>
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Cc: freebsd-stable@freebsd.org
Subject: Re: aliases not working in em0
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Steve Bertrand wrote:
> Wendell Martins Borges wrote:
> 
>>> # tcpdump -n -i em0 host 192.168.112.181
>> ping for another host:
>>
>> stewie# tcpdump -n -i em0 host 192.168.112.181
>> tcpdump: verbose output suppressed, use -v or -vv for full protocol decode
>> listening on em0, link-type EN10MB (Ethernet), capture size 96 bytes
>> 13:11:21.530635 IP 192.168.112.8 > 192.168.112.181: ICMP echo request,
>> id 11852, seq 0, length 64
>> 13:11:22.530803 IP 192.168.112.8 > 192.168.112.181: ICMP echo request,
>> id 11852, seq 1, length 64
> 
> So, the box can be found on the network, but it is not returning traffic
> properly.
> 
> What does # arp -a have to say, on both boxes?

Also, it may help to run tcpdump without the 'host' parameter on em0
while the pinging is occurring to see if you can find out whether the
ICMP replies are being sent out as the primary IP.

Steve