It’s a MacBook Pro running macOS 10.14.6.  I just upgraded Wireshark3 by 
rebuilding it using MacPorts.  Previously, just manually entering the “sudo 
chgrp…” and “sudo chmod…” Unix commands used to work fine.  Now it’s not.

> On 14 Jan, 2021, at 09:48 , Jaap Keuter <jaap.keu...@xs4all.nl> wrote:
> 
> Hi,
> 
> It would probably help if you listed what your system is and what you were 
> doing before.
> 
> Thanks,
> Jaap
> 
> 
>> On 14 Jan 2021, at 01:18, Kok-Yong Tan <k...@realityartisans.com 
>> <mailto:k...@realityartisans.com>> wrote:
>> 
>> sudo wireshark-chmodbpf
>> /opt/local/sbin/wireshark-chmodbpf: line 35: /dev/bpf0: Resource busy
>> /opt/local/sbin/wireshark-chmodbpf: line 35: /dev/bpf1: Resource busy
>> 
>> Does anybody know how to fix the above?
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