系统设置中ipv6网关显示错误

据我所知，ipv6网关是fe80开头才对吧

mas@mas-PC:~$ ip -6 route show
::1 dev lo proto kernel metric 256 pref medium
240e:388:891d:c600::/64 dev enp0s31f6 proto ra metric 100 pref medium
240e:388:891d:c600::/64 dev wlp3s0 proto ra metric 600 pref medium
fe80::/64 dev enp0s31f6 proto kernel metric 100 pref medium
fe80::/64 dev wlp3s0 proto kernel metric 600 pref medium
default via fe80::7654:27ff:fe0c:9280 dev enp0s31f6 proto ra metric 100 pref medium
default via fe80::7654:27ff:fe0c:9280 dev wlp3s0 proto ra metric 600 pref medium
mas@mas-PC:~$ ifconfig

enp0s31f6: flags=4163 mtu 1500
inet 192.168.0.34 netmask 255.255.255.0 broadcast 192.168.0.255
inet6 fe80::bff:45:a373:32fa prefixlen 64 scopeid 0x20
inet6 240e:388:891d:c600:25af:261b:479f:c4c5 prefixlen 64 scopeid 0x0
ether c8:5b:76:f5:d2:d5 txqueuelen 1000 (Ethernet)
RX packets 4378 bytes 526002 (513.6 KiB)
RX errors 0 dropped 0 overruns 0 frame 0
TX packets 930 bytes 144399 (141.0 KiB)
TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0
device interrupt 16 memory 0xe1200000-e1220000

lo: flags=73 mtu 65536
inet 127.0.0.1 netmask 255.0.0.0
inet6 ::1 prefixlen 128 scopeid 0x10
loop txqueuelen 1000 (Local Loopback)
RX packets 9 bytes 792 (792.0 B)
RX errors 0 dropped 0 overruns 0 frame 0
TX packets 9 bytes 792 (792.0 B)
TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0

wlp3s0: flags=4163 mtu 1500
inet 192.168.0.46 netmask 255.255.255.0 broadcast 192.168.0.255
inet6 fe80::c66b:a9ac:4d3:1fd1 prefixlen 64 scopeid 0x20
inet6 240e:388:891d:c600:b907:2141:f8e6:a2eb prefixlen 64 scopeid 0x0
ether 14:ab:c5:2f:4e:eb txqueuelen 1000 (Ethernet)
RX packets 3307 bytes 207821 (202.9 KiB)
RX errors 0 dropped 0 overruns 0 frame 0
TX packets 120 bytes 13984 (13.6 KiB)
TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0