[BUG] Latest image - ENABLE_IPV6 not being honored?

I’ve used this container for years now. Just this morning, I pulled the latest :alpine image and tried to start the container, and I get the following error:

ERROR: for proxy  Cannot start service proxy: driver failed programming external connectivity on endpoint nginx-proxy (xxx): Error starting userland proxy: listen tcp6 [::]:443: socket: address family not supported by protocol

I have ipv6 disabled on my system, and did not have the ENABLE_IPV6 environment variable set. I tried to set it to false to no avail. I also tried to use the :1586 image on docker hub, but I have the same issue.

I mount my configs in and none of them contain an ipv6 listener ([::]:443). Here’s the relevant docker-compose service:

proxy:
    image: nginxproxy/nginx-proxy:alpine
    labels:
      - "com.github.jrcs.letsencrypt_nginx_proxy_companion.nginx_proxy=true"
    container_name: nginx-proxy
    environment:
      - ENABLE_IPV6=false
    ports:
      - 80:80
      - 443:443
    volumes:
      - ./client-sites/sites:/client-sites
      - ./proxy/conf.d:/etc/nginx/conf.d:rw
      - ./proxy/vhost.d:/etc/nginx/vhost.d:rw
      - ./proxy/html:/usr/share/nginx/html:rw
      - ./proxy/certs:/etc/nginx/certs:ro
      - /etc/localtime:/etc/localtime:ro
      - /var/run/docker.sock:/tmp/docker.sock:ro
    restart: unless-stopped

Listeners in my conf.d look like:

listen 443 ssl http2;

Thank you to the team for their hard work on this project! It has worked beautifully for many years, and I hope to have it working again soon 😃

[buchdag]

Sounds a lot like https://github.com/moby/moby/issues/42288

[tnyeanderson]

@buchdag I think you’re right, it’s related to that issue. I will keep my eyes peeled on it… Thanks for the guidance! Gonna close this as it is not y’alls problem 😃

EDIT: Want to note that I am on 20.10.6, so it’s almost certainly that issue