====== pfSense: Set fe80::1 as LLA ======

https://serverfault.com/questions/837058/add-an-alias-to-a-pfsense-interface

  * Go to the Firewall > Virtual IPs menu
  * Click Add
  * Click IP Alias
  * Select the Interface to add the IP alias to
  * Add the IP alias to the Address field and set its prefix length
  * Click Save