Couldn't run /usr/bin/dumpcap in child process:权限不够

转自：http://j4s0nh4ck.iteye.com/blog/2242640

解决方法：

在ubuntu终端依次输入下边命令：

sudo apt-get install libcap2-bin wireshark
sudo chgrp myusername /usr/bin/dumpcap
sudo chmod 750 /usr/bin/dumpcap
sudo setcap cap_net_raw,cap_net_admin+eip /usr/bin/dumpcap