Command: ping6 -c 4 -I br_fftr fe80:0000:0000:0000:6a72:51ff:fe34:a1ea

Result:
Array
(
    [0] => PING fe80:0000:0000:0000:6a72:51ff:fe34:a1ea(fe80::6a72:51ff:fe34:a1ea) from fe80::f0b0:20ff:fe28:2623 br_fftr: 56 data bytes
    [1] => 64 bytes from fe80::6a72:51ff:fe34:a1ea: icmp_seq=1 ttl=64 time=40.8 ms
    [2] => 64 bytes from fe80::6a72:51ff:fe34:a1ea: icmp_seq=2 ttl=64 time=41.5 ms
    [3] => 64 bytes from fe80::6a72:51ff:fe34:a1ea: icmp_seq=3 ttl=64 time=41.0 ms
    [4] => 64 bytes from fe80::6a72:51ff:fe34:a1ea: icmp_seq=4 ttl=64 time=40.5 ms
    [5] => 
    [6] => --- fe80:0000:0000:0000:6a72:51ff:fe34:a1ea ping statistics ---
    [7] => 4 packets transmitted, 4 received, 0% packet loss, time 3003ms
    [8] => rtt min/avg/max/mdev = 40.524/41.019/41.578/0.380 ms
)