mtr: unable to get raw sockets

TECH``posts``Mac``homebrew``mtr 用homebrew安装mtr 后有段提示：mtr requires root privileges so you will need to run sudo mtr. You should be certain that you trust any software you grant root privileges. 所以要吧mtr改成root属主并且激活suid位

1.  $ sudo chown root:wheel /usr/local/Cellar/mtr/0.86/sbin/mtr2.  $ sudo chmod u+s /usr/local/Cellar/mtr/0.86/sbin/mtr