PING serial2.ru (104.21.80.151) 56(84) bytes of data.
64 bytes from 104.21.80.151 (104.21.80.151): icmp_seq=1 ttl=60 time=6.65 ms
64 bytes from 104.21.80.151 (104.21.80.151): icmp_seq=2 ttl=60 time=4.36 ms
64 bytes from 104.21.80.151 (104.21.80.151): icmp_seq=3 ttl=60 time=4.24 ms

--- serial2.ru ping statistics ---
3 packets transmitted, 3 received, 0% packet loss, time 2002ms
rtt min/avg/max/mdev = 4.246/5.086/6.653/1.111 ms