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Wireshark-users: Re: [Wireshark-users] Having problem tracing multiple ip addresses

From: Ricardo Díez Antequera <rda@xxxxxxxxx>
Date: Fri, 23 Apr 2021 21:07:07 +0200

Have you used 192.168.60.200 (the subnet address) or 192.168.60.203 (the broadcast address for the subnet) for a device? Those addresses are reserved in your subnet and could cause errors in tcpdump engine. A /30 subnet only supports 2 hosts.


Regards,


Ricardo



---- Robert Blair escribió ----

I changed three IoT devices from DHCP to static addresses so I could trace all
three of them.

when I enter "net 192.168.60.201" in the capture filter I get all traffic to
and from the ip.

If I enter "net 192.168.60.200/30"; I get all fraffic from the ip addresses but
none going to the ip addresses. According to the documentation at
<https://wiki.wireshark.org/CaptureFilters>; that syntax shoud capture all
traffic going to and from the device.

Any assistance on getting the trace to work will be appreciated.
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