About filter "udp && !icmp"

[delarge <charlie () linuxers cl>]

Hello everybody,

I'm a new user of Wireshark and I'm capturing UDP traffic. Startly I used
the "udp" filter but appears some undesirable ICMP packets, so then
googling I've found the "udp && !icmp" filter to avoid capture ICMP
packets.

It's all right till here, but when I export the capture as plain text, the
ICMP packets appear again. Seems like the filter just works in the main
screenl of Wireshark. What can I do to capture just UDP traffic?


Thanks in advance.
Regards.

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