root@ubuntu:~# ping ya.ru
ping: unknown host ya.ru
root@ubuntu:~# ping google.com
ping: unknown host google.com
root@ubuntu:~# ping 213.180.204.8
PING 213.180.204.8 (213.180.204.

56(84) bytes of data.
From 10.10.1.30 icmp_seq=1 Destination Host Unreachable
From 10.10.1.30 icmp_seq=2 Destination Host Unreachable
From 10.10.1.30 icmp_seq=3 Destination Host Unreachable
From 10.10.1.30 icmp_seq=4 Destination Host Unreachable
From 10.10.1.30 icmp_seq=5 Destination Host Unreachable
From 10.10.1.30 icmp_seq=6 Destination Host Unreachable
From 10.10.1.30 icmp_seq=7 Destination Host Unreachable
From 10.10.1.30 icmp_seq=8 Destination Host Unreachable
From 10.10.1.30 icmp_seq=9 Destination Host Unreachable
From 10.10.1.30 icmp_seq=10 Destination Host Unreachable
From 10.10.1.30 icmp_seq=11 Destination Host Unreachable
From 10.10.1.30 icmp_seq=12 Destination Host Unreachable
^C
--- 213.180.204.8 ping statistics ---
13 packets transmitted, 0 received, +12 errors, 100% packet loss, time 12040ms
, pipe 3
root@ubuntu:~# ping 10.221.30.50
PING 10.221.30.50 (10.221.30.50) 56(84) bytes of data.
64 bytes from 10.221.30.50: icmp_seq=1 ttl=64 time=0.255 ms
64 bytes from 10.221.30.50: icmp_seq=2 ttl=64 time=0.177 ms
64 bytes from 10.221.30.50: icmp_seq=3 ttl=64 time=0.182 ms
64 bytes from 10.221.30.50: icmp_seq=4 ttl=64 time=0.161 ms
64 bytes from 10.221.30.50: icmp_seq=5 ttl=64 time=0.176 ms
64 bytes from 10.221.30.50: icmp_seq=6 ttl=64 time=0.180 ms
64 bytes from 10.221.30.50: icmp_seq=7 ttl=64 time=0.177 ms
64 bytes from 10.221.30.50: icmp_seq=8 ttl=64 time=0.181 ms
64 bytes from 10.221.30.50: icmp_seq=9 ttl=64 time=0.181 ms
^C
--- 10.221.30.50 ping statistics ---
9 packets transmitted, 9 received, 0% packet loss, time 7998ms
rtt min/avg/max/mdev = 0.161/0.185/0.255/0.029 ms
root@ubuntu:~# ping 10.10.1.30
PING 10.10.1.30 (10.10.1.30) 56(84) bytes of data.
64 bytes from 10.10.1.30: icmp_seq=1 ttl=64 time=0.229 ms
64 bytes from 10.10.1.30: icmp_seq=2 ttl=64 time=0.177 ms
64 bytes from 10.10.1.30: icmp_seq=3 ttl=64 time=0.179 ms
64 bytes from 10.10.1.30: icmp_seq=4 ttl=64 time=0.179 ms
64 bytes from 10.10.1.30: icmp_seq=5 ttl=64 time=0.186 ms
64 bytes from 10.10.1.30: icmp_seq=6 ttl=64 time=0.185 ms
64 bytes from 10.10.1.30: icmp_seq=7 ttl=64 time=0.180 ms
64 bytes from 10.10.1.30: icmp_seq=8 ttl=64 time=0.175 ms
64 bytes from 10.10.1.30: icmp_seq=9 ttl=64 time=0.159 ms
64 bytes from 10.10.1.30: icmp_seq=10 ttl=64 time=0.183 ms
^C
--- 10.10.1.30 ping statistics ---
10 packets transmitted, 10 received, 0% packet loss, time 8998ms
rtt min/avg/max/mdev = 0.159/0.183/0.229/0.018 ms