/bin/ping6
/bin/ping
/bin/tracepath6
/bin/tracepath
/sbin/arping
/sbin/ifenslave
/sbin/rdisc
/usr/sbin/arping
/usr/sbin/clockdiff
/usr/sbin/ping6
/usr/sbin/tracepath6
/usr/sbin/tracepath
You may install this package on CentOS with
yum
install iputils