::1 和 fe80::1%lo0 看起来真是邪门啊, 如何理解?

 ➤➤ cat /etc/hosts
##
# Host Database
#
# localhost is used to configure the loopback interface
# when the system is booting.  Do not change this entry.
##
127.0.0.1   localhost pages flower-mud drafts gtasks
255.255.255.255 broadcasthost
::1             localhost
fe80::1%lo0 localhost