mac 10.14.6 下， ping 没权限啊？

突然发现这个问题，不知道问题出在哪里。

ls -l /usr/local/bin |grep ping  
lrwxr-xr-x  1 pcpc  admin       31  8 31 08:46 nping -> ../Cellar/nmap/7.80_1/bin/nping
-rwsr-xr-x  1 pcpc  admin    41968  9 16 11:25 ping
lrwxr-xr-x  1 pcpc  admin       33 11 18  2018 tcping -> ../Cellar/tcping/1.3.5/bin/tcping

MacBOOK:bin pcpc$ which ping
/usr/local/opt/inetutils/libexec/gnubin/ping

MacBOOK:/ pcpc$ ping baidu.com  
ping: Lacking privilege for raw socket.  
MacBOOK:/ pcpc$ traceroute 223.5.5.5  
traceroute to 223.5.5.5 (223.5.5.5), 64 hops max  
traceroute: socket: Operation not permitted

MacBOOK:sbin pcpc$ groups
staff everyone localaccounts _appserverusr admin _appserveradm _lpadmin com.apple.sharepoint.group.3 com.apple.sharepoint.group.2 _appstore _lpoperator _developer _analyticsusers com.apple.access_ftp com.apple.access_screensharing com.apple.access_ssh com.apple.sharepoint.group.1

vi ~/.bash_profile

export CLICOLOR=1
export PYENV_ROOT="${HOME}/.pyenv"
if [ -d "${PYENV_ROOT}" ]; then
  export PATH="${PYENV_ROOT}/bin:${PATH}"
  eval "$(pyenv init -)"
 #eval "$(thefuck --alias fuck)"
fi
archey

#if which pyenv > /dev/null; then eval "$(pyenv init -)"; fi

export PATH="/usr/local/opt/sqlite/bin:$PATH"
export PATH="/usr/local/opt/inetutils/libexec/gnubin:$PATH"



export PATH=$PATH:/usr/local/sbin
export LDFLAGS="-L/usr/local/opt/zlib/lib"
export CPPFLAGS="-I/usr/local/opt/zlib/include"

export PATH="/usr/local/opt/icu4c/bin:$PATH"
export PATH="/usr/local/opt/icu4c/sbin:$PATH"
#export PATH="$HOME/.rbenv/bin:$PATH"
#eval "$(rbenv init -)"
export PATH="/usr/local/opt/sqlite/bin:$PATH"
export PATH="/usr/local/opt/openssl@1.1/bin:$PATH"
export PATH="/usr/local/opt/nss/bin:$PATH"
if which pyenv-virtualenv-init > /dev/null; then eval "$(pyenv virtualenv-init -)"; fi

我能想到的信息就这些了，还需要什么么？？？