root@BAGC beng # ping6  -s 56 2001:db8:4::2
PING 2001:db8:4::2(2001:db8:4::2) 56 data bytes
64 bytes from 2001:db8:4::2: icmp_seq=1 ttl=251 time=3.18 ms
64 bytes from 2001:db8:4::2: icmp_seq=2 ttl=251 time=2.87 ms
64 bytes from 2001:db8:4::2: icmp_seq=3 ttl=251 time=2.94 ms
64 bytes from 2001:db8:4::2: icmp_seq=4 ttl=251 time=2.93 ms
64 bytes from 2001:db8:4::2: icmp_seq=5 ttl=251 time=3.09 ms
64 bytes from 2001:db8:4::2: icmp_seq=6 ttl=251 time=2.80 ms
64 bytes from 2001:db8:4::2: icmp_seq=7 ttl=60 time=3.04 ms
64 bytes from 2001:db8:4::2: icmp_seq=8 ttl=60 time=2.72 ms
64 bytes from 2001:db8:4::2: icmp_seq=9 ttl=60 time=2.98 ms
64 bytes from 2001:db8:4::2: icmp_seq=10 ttl=60 time=2.95 ms

--- 2001:db8:4::2 ping statistics ---
10 packets transmitted, 10 received, 0% packet loss, time 9014ms
rtt min/avg/max/mdev = 2.723/2.955/3.188/0.143 ms
root@BAGC beng # ping6  -s 248 2001:db8:4::2
PING 2001:db8:4::2(2001:db8:4::2) 248 data bytes
256 bytes from 2001:db8:4::2: icmp_seq=1 ttl=60 time=3.18 ms
256 bytes from 2001:db8:4::2: icmp_seq=2 ttl=60 time=3.07 ms
256 bytes from 2001:db8:4::2: icmp_seq=3 ttl=60 time=3.25 ms
256 bytes from 2001:db8:4::2: icmp_seq=4 ttl=60 time=3.04 ms
256 bytes from 2001:db8:4::2: icmp_seq=5 ttl=251 time=3.20 ms
256 bytes from 2001:db8:4::2: icmp_seq=6 ttl=251 time=3.03 ms
256 bytes from 2001:db8:4::2: icmp_seq=7 ttl=251 time=3.06 ms
256 bytes from 2001:db8:4::2: icmp_seq=8 ttl=251 time=3.09 ms
256 bytes from 2001:db8:4::2: icmp_seq=9 ttl=251 time=3.14 ms
256 bytes from 2001:db8:4::2: icmp_seq=10 ttl=251 time=2.83 ms

--- 2001:db8:4::2 ping statistics ---
10 packets transmitted, 10 received, 0% packet loss, time 9013ms
rtt min/avg/max/mdev = 2.837/3.093/3.251/0.117 ms
root@BAGC beng # ping6  -s 504 2001:db8:4::2
PING 2001:db8:4::2(2001:db8:4::2) 504 data bytes
512 bytes from 2001:db8:4::2: icmp_seq=1 ttl=251 time=3.38 ms
512 bytes from 2001:db8:4::2: icmp_seq=2 ttl=251 time=3.48 ms
512 bytes from 2001:db8:4::2: icmp_seq=3 ttl=251 time=3.49 ms
512 bytes from 2001:db8:4::2: icmp_seq=4 ttl=251 time=3.52 ms
512 bytes from 2001:db8:4::2: icmp_seq=5 ttl=251 time=3.24 ms
512 bytes from 2001:db8:4::2: icmp_seq=6 ttl=251 time=3.51 ms
512 bytes from 2001:db8:4::2: icmp_seq=7 ttl=251 time=3.14 ms
512 bytes from 2001:db8:4::2: icmp_seq=8 ttl=251 time=3.26 ms
512 bytes from 2001:db8:4::2: icmp_seq=9 ttl=251 time=3.31 ms
512 bytes from 2001:db8:4::2: icmp_seq=10 ttl=251 time=3.26 ms

--- 2001:db8:4::2 ping statistics ---
10 packets transmitted, 10 received, 0% packet loss, time 9015ms
rtt min/avg/max/mdev = 3.143/3.363/3.524/0.139 ms
root@BAGC beng # ping6  -s 1016 2001:db8:4::2
PING 2001:db8:4::2(2001:db8:4::2) 1016 data bytes
1024 bytes from 2001:db8:4::2: icmp_seq=1 ttl=251 time=3.43 ms
1024 bytes from 2001:db8:4::2: icmp_seq=2 ttl=251 time=3.68 ms
1024 bytes from 2001:db8:4::2: icmp_seq=3 ttl=251 time=3.69 ms
1024 bytes from 2001:db8:4::2: icmp_seq=4 ttl=251 time=4.07 ms
1024 bytes from 2001:db8:4::2: icmp_seq=5 ttl=251 time=3.94 ms
1024 bytes from 2001:db8:4::2: icmp_seq=6 ttl=251 time=3.99 ms
1024 bytes from 2001:db8:4::2: icmp_seq=7 ttl=251 time=4.06 ms
1024 bytes from 2001:db8:4::2: icmp_seq=8 ttl=251 time=3.84 ms
1024 bytes from 2001:db8:4::2: icmp_seq=9 ttl=251 time=3.91 ms
1024 bytes from 2001:db8:4::2: icmp_seq=10 ttl=251 time=3.93 ms

--- 2001:db8:4::2 ping statistics ---
10 packets transmitted, 10 received, 0% packet loss, time 9015ms
rtt min/avg/max/mdev = 3.431/3.858/4.078/0.206 ms
root@BAGC beng # ping6  -s 2040 2001:db8:4::2
PING 2001:db8:4::2(2001:db8:4::2) 2040 data bytes
From 2001:db8:3::1 icmp_seq=1 Packet too big: mtu=1480
2048 bytes from 2001:db8:4::2: icmp_seq=2 ttl=251 time=5.02 ms
2048 bytes from 2001:db8:4::2: icmp_seq=3 ttl=251 time=4.96 ms
2048 bytes from 2001:db8:4::2: icmp_seq=4 ttl=251 time=5.09 ms
2048 bytes from 2001:db8:4::2: icmp_seq=5 ttl=251 time=4.97 ms
2048 bytes from 2001:db8:4::2: icmp_seq=6 ttl=251 time=4.73 ms
2048 bytes from 2001:db8:4::2: icmp_seq=7 ttl=251 time=4.96 ms
2048 bytes from 2001:db8:4::2: icmp_seq=8 ttl=251 time=4.91 ms
2048 bytes from 2001:db8:4::2: icmp_seq=9 ttl=251 time=4.75 ms
2048 bytes from 2001:db8:4::2: icmp_seq=10 ttl=251 time=4.88 ms

--- 2001:db8:4::2 ping statistics ---
10 packets transmitted, 9 received, +1 errors, 10% packet loss, time 9014ms
rtt min/avg/max/mdev = 4.737/4.923/5.098/0.141 ms
root@BAGC beng # ping6  -s 120 2001:db8:4::2
PING 2001:db8:4::2(2001:db8:4::2) 120 data bytes
128 bytes from 2001:db8:4::2: icmp_seq=1 ttl=60 time=3.26 ms
128 bytes from 2001:db8:4::2: icmp_seq=2 ttl=60 time=2.95 ms
128 bytes from 2001:db8:4::2: icmp_seq=3 ttl=60 time=3.04 ms
128 bytes from 2001:db8:4::2: icmp_seq=4 ttl=60 time=2.90 ms
128 bytes from 2001:db8:4::2: icmp_seq=5 ttl=60 time=3.09 ms
128 bytes from 2001:db8:4::2: icmp_seq=6 ttl=251 time=2.81 ms
128 bytes from 2001:db8:4::2: icmp_seq=7 ttl=251 time=3.11 ms
128 bytes from 2001:db8:4::2: icmp_seq=8 ttl=251 time=2.89 ms
128 bytes from 2001:db8:4::2: icmp_seq=9 ttl=251 time=2.90 ms
128 bytes from 2001:db8:4::2: icmp_seq=10 ttl=251 time=2.94 ms

--- 2001:db8:4::2 ping statistics ---
10 packets transmitted, 10 received, 0% packet loss, time 9013ms
rtt min/avg/max/mdev = 2.813/2.992/3.260/0.133 ms
root@BAGC beng #