IPv6 Config Unifi

{
   "interfaces":{
      "ethernet":{
         "eth1":{ #LAN interface
            "address":[
               "fd00::1/64", #You can choose any prefix you want here, as long as it starts with "fd"
               "192.168.0.1/24" #Put what your IPv4 network is in here if you want to use dual-stack
            ],
            "ipv6":{
               "router-advert":{
                  "prefix":{
                     "fd00::/64":{
                        "autonomous-flag":"true",
                        "on-link-flag":"true",
                        "preferred-lifetime":"14400",
                        "valid-lifetime":"86400"
                     }
                  }
               }
            }
         }
      }
   },

   "firewall":{
           "ipv6-name":{
                   "WANv6_IN":{
                           "rule":{
                                   "2000":{
                                           "action": "accept",
                                           "description": "Alfa V6 In",
                                           "destination":{
                                                    #Replace below first 64 bits with your own EUI-64
                                                   "address": "::c707:1aff:fe53:9bad/::ffff:ffff:ffff:ffff"
                                           },
                                           "protocol": "all"
                                   }
                           }
                   }
           }
   }
}