Command: ping6 -c 4 -I br_fftr fe80:0000:0000:0000:60e4:27ff:fe76:bbe4

Result:
Array
(
    [0] => PING fe80:0000:0000:0000:60e4:27ff:fe76:bbe4(fe80::60e4:27ff:fe76:bbe4) from fe80::8c20:6fff:fe88:fba5 br_fftr: 56 data bytes
    [1] => From fe80::8c20:6fff:fe88:fba5 icmp_seq=1 Destination unreachable: Address unreachable
    [2] => From fe80::8c20:6fff:fe88:fba5 icmp_seq=2 Destination unreachable: Address unreachable
    [3] => From fe80::8c20:6fff:fe88:fba5 icmp_seq=3 Destination unreachable: Address unreachable
    [4] => From fe80::8c20:6fff:fe88:fba5 icmp_seq=4 Destination unreachable: Address unreachable
    [5] => 
    [6] => --- fe80:0000:0000:0000:60e4:27ff:fe76:bbe4 ping statistics ---
    [7] => 4 packets transmitted, 0 received, +4 errors, 100% packet loss, time 3036ms
    [8] => 
)