I'm trying to get ipv6 to run in a docker-compose stack but am unable to get the docker_default network to get an ipv6 subnet. I added the ipv6 lines in the daemon.json file and bridge network got an ipv6, so I know that docker can get an address but the docker_default is where my containers all have their addresses.

I did some googling and found people mentioning 2 lines of code involving sysctls but I attempted to put that my docker-compose yaml under the service section, but it came back with an error. Does it have to be on a particular service?

The reason why I'm doing it is because an aws service (home assistant alexa Integration) isn't working when I enable ipv6 on my router and I figured I can enable it on the main bridge so I can get my home assistant, nginx, and cloudflare ddns containers all on ipv6. Any help would be greatly appreciated.