Command: ping6 -c 4 -I br-ffr fe80:0000:0000:0000:a62b:b0ff:fea2:5002

Result:
Array
(
    [0] => PING fe80:0000:0000:0000:a62b:b0ff:fea2:5002(fe80::a62b:b0ff:fea2:5002) from fe80::649e:f0ff:feb4:30e0 br-ffr: 56 data bytes
    [1] => 64 bytes from fe80::a62b:b0ff:fea2:5002: icmp_seq=1 ttl=64 time=144 ms
    [2] => 64 bytes from fe80::a62b:b0ff:fea2:5002: icmp_seq=2 ttl=64 time=76.4 ms
    [3] => 64 bytes from fe80::a62b:b0ff:fea2:5002: icmp_seq=3 ttl=64 time=70.3 ms
    [4] => 64 bytes from fe80::a62b:b0ff:fea2:5002: icmp_seq=4 ttl=64 time=73.6 ms
    [5] => 
    [6] => --- fe80:0000:0000:0000:a62b:b0ff:fea2:5002 ping statistics ---
    [7] => 4 packets transmitted, 4 received, 0% packet loss, time 3004ms
    [8] => rtt min/avg/max/mdev = 70.345/91.258/144.563/30.852 ms
)