Command: ping6 -c 4 -I br-ffr fe80:0000:0000:0000:62e3:27ff:feb8:30af

Result:
Array
(
    [0] => PING fe80:0000:0000:0000:62e3:27ff:feb8:30af(fe80::62e3:27ff:feb8:30af) from fe80::3c9c:30ff:fe9f:b137 br-ffr: 56 data bytes
    [1] => 64 bytes from fe80::62e3:27ff:feb8:30af: icmp_seq=1 ttl=64 time=62.4 ms
    [2] => 64 bytes from fe80::62e3:27ff:feb8:30af: icmp_seq=2 ttl=64 time=30.1 ms
    [3] => 64 bytes from fe80::62e3:27ff:feb8:30af: icmp_seq=3 ttl=64 time=27.7 ms
    [4] => 64 bytes from fe80::62e3:27ff:feb8:30af: icmp_seq=4 ttl=64 time=21.6 ms
    [5] => 
    [6] => --- fe80:0000:0000:0000:62e3:27ff:feb8:30af ping statistics ---
    [7] => 4 packets transmitted, 4 received, 0% packet loss, time 3004ms
    [8] => rtt min/avg/max/mdev = 21.670/35.497/62.424/15.852 ms
)