# ping -M do -s 1472 115.XXX.XXX.155
PING 115.XXX.XXX.155 (115.XXX.XXX.155) 1472(1500) bytes of data.
1480 bytes from 115.XXX.XXX.155: icmp_seq=1 ttl=47 time=6.24 ms
1480 bytes from 115.XXX.XXX.155: icmp_seq=2 ttl=47 time=5.25 ms
^C
--- 115.XXX.XXX.155 ping statistics ---
2 packets transmitted, 2 received, 0% packet loss, time 1001ms
...........................
# ping -M do -s 1473 115.XXX.XXX.155
PING 115.XXX.XXX.155 (115.XXX.XXX.155) 1473(1501) bytes of data.
ping: local error: Message too long, mtu=1500
ping: local error: Message too long, mtu=1500
^C
--- 115.XXX.XXX.155 ping statistics ---
2 packets transmitted, 0 received, +2 errors, 100% packet loss, time 1008ms