MTU 1500
# ping -c 3 -M do -s 1472 google.com PING (142.250.71.238) 1472(1500) bytes of data. 1480 bytes from 142.250.71.238: icmp_seq=1 ttl=118 time=49.1 ms 1480 bytes from 142.250.71.238: icmp_seq=2 ttl=118 time=49.2 ms 1480 bytes from 142.250.71.238: icmp_seq=3 ttl=118 time=49.1 ms --- ping statistics --- 3 packets transmitted, 3 received, 0% packet loss, time 2003ms rtt min/avg/max/mdev = 49.064/49.120/49.182/0.048 ms
MTU 9000
# ping -c 3 -4 -M do -s 8972 google.com PING (142.250.71.238) 8972(9000) bytes of data. From 134.75.108.98 (134.75.108.98) icmp_seq=1 Frag needed and DF set (mtu = 1986) ping: local error: message too long, mtu=1986 ping: local error: message too long, mtu=1986 --- ping statistics --- 3 packets transmitted, 0 received, +3 errors, 100% packet loss, time 2005ms
# ping -c 3 -4 -M do -s 8972 ps-daej.kreonet.net PING ps-daej.kreonet.net (134.75.247.3) 8972(9000) bytes of data. 8980 bytes from 134.75.247.3: icmp_seq=1 ttl=62 time=0.262 ms 8980 bytes from 134.75.247.3: icmp_seq=2 ttl=62 time=0.283 ms 8980 bytes from 134.75.247.3: icmp_seq=3 ttl=62 time=0.272 ms --- ps-daej.kreonet.net ping statistics --- 3 packets transmitted, 3 received, 0% packet loss, time 2005ms rtt min/avg/max/mdev = 0.262/0.272/0.283/0.008 ms