PUBLIC IPV6 ADDRESS:
xxxx:xxxx:2:d0::216f:3001
PUBLIC IPV6 GATEWAY:
xxxx:xxxx:2:d0::1
CONFIGURABLE ADDRESS RANGE:
xxxx:xxxx:2:d0::216f:3000 - xxxx:xxxx:2:d0::216f:300f

{
  "ipv6": true,
  "fixed-cidr-v6": "xxxx:xxxx:2:d0::216f:3000/124"
}

{
  "ipv6": true,
  "fixed-cidr-v6": "2001:db8::c008/125"
}

docker run -d --name ipv6test alpine ash -c "ping6 2606:4700:4700::1111"

ip -6 neigh add proxy xxxx:xxxx:2:d0::216f:3004 dev eth0

version: "3.7"

services:
  app:
    image: nginx:alpine
    networks:
      app_net:
        ipv6_address: xxxx:xxxx:2:d0::216f:3010

networks:
  app_net:
    ipam:
      driver: default
      config:
        - subnet: "xxxx:xxxx:2:d0::216f:3000/124"

# ping6 2606:4700:4700::1111
PING 2606:4700:4700::1111 (2606:4700:4700::1111): 56 data bytes
ping6: sendto: Address not available