# ifconfig
wlp0s29f7u6: ....
...
inet6 fe80::a00:20ff:fe9d:5c55 prefixlen 64 scopeid 0x20<link>
...
# ping6 fe80::a00:20ff:fe9d:5c55%wlp0s29f7u6
# ifconfig
wlp0s29f7u6: ....
...
inet6 fe80::a00:20ff:fe9d:5c55 prefixlen 64 scopeid 0x20<link>
...
# ping6 fe80::a00:20ff:fe9d:5c55%wlp0s29f7u6