The capture session could not be initiated on interface 'enp2s0' (You don't have permission to capture on that device). Please check to make sure you have sufficient permissions. On Debian and Debian derivatives such as Ubuntu, if you have installed Wireshark from a package, try running sudo dpkg-reconfigure wireshark-common selecting "<Yes>" in response to the question Should non-superusers be able to capture packets? adding yourself to the "wireshark" group by running sudo usermod -a -G wireshark {your username} and then logging out and logging back in again.
解决办法：
suguihua@suguihua-OptiPlex-3080:~/下载$ sudo groupadd wireshark [sudo] suguihua 的密码： suguihua@suguihua-OptiPlex-3080:~/下载$ sudo chgrp wireshark /usr/bin/dumpcap suguihua@suguihua-OptiPlex-3080:~/下载$ sudo chmod 4755 /usr/bin/dumpcap suguihua@suguihua-OptiPlex-3080:~/下载$ sudo gpasswd -a suguihua wireshark 正在将用户“suguihua”加入到“wireshark”组中
之后就可以愉快的抓包了