pterodactyl0 interface self-assigning default IPv6 gateway address

[marfier]

After I installed Wings, global IPv6 on my server stopped working completely.

I looked in ip addr, and I noticed that I don't have a global IPv6 address and prefix anymore:

2: eno1: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc pfifo_fast state UP group default qlen 1000
    link/ether f0:1f:af:43:ba:0c brd ff:ff:ff:ff:ff:ff
    altname enp0s25
    inet 192.168.1.192/24 brd 192.168.1.255 scope global dynamic eno1
       valid_lft 43185sec preferred_lft 43185sec
    inet6 fe80::f21f:afff:fe43:ba0c/64 scope link 
       valid_lft forever preferred_lft forever

I then scrolled down and noticed that the pterodactyl0 interface has fe80::1 as a link-local address:

4: pterodactyl0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc noqueue state UP group default 
    link/ether 02:42:94:4c:93:8e brd ff:ff:ff:ff:ff:ff
    inet 172.18.0.1/16 brd 172.18.255.255 scope global pterodactyl0
       valid_lft forever preferred_lft forever
    inet6 fdba:17c8:6c94::1011/64 scope global 
       valid_lft forever preferred_lft forever
    inet6 fe80::42:94ff:fe4c:938e/64 scope link 
       valid_lft forever preferred_lft forever
    inet6 fe80::1/64 scope link 
       valid_lft forever preferred_lft forever

Why is the pterodactyl0 interface self-assigning fe80::1 as a link-local address? That is the default router gateway address, and it's interfering with the RA service of my actual router.

I have tried deleting the assignment, but it keeps coming back after restarting.