[root@sip ~]# ping -f vk.com
PING vk.com (87.240.131.119) 56(84) bytes of data.
...........................................................................................................................................................................................................................................................
--- vk.com ping statistics ---
251 packets transmitted, 0 received, 100% packet loss, time 3415ms
[root@sip ~]# ping -f e1.ru
PING e1.ru (194.226.146.222) 56(84) bytes of data.
..................
--- e1.ru ping statistics ---
2182 packets transmitted, 2164 received, 0% packet loss, time 8032ms
rtt min/avg/max/mdev = 2.427/3.565/44.995/1.849 ms, pipe 2, ipg/ewma 3.682/3.493 ms
[root@sip ~]# ping -f yandex.ru
PING yandex.ru (213.180.204.11) 56(84) bytes of data.
..
--- yandex.ru ping statistics ---
602 packets transmitted, 600 received, 0% packet loss, time 7980ms
rtt min/avg/max/mdev = 27.732/28.643/91.462/3.226 ms, pipe 4, ipg/ewma 13.278/28.517 ms
[root@sip ~]#