I need an ipv6 and a normal ipv4 bridge in the same container

Docker Engine Compose
3

sure, my question was more a “give me something to read assuming my need is not impossible”, but if you can help me directly it’s also better :slight_smile:
docker version and info:

root@Services:~# docker version
Client: Docker Engine - Community
 Version:           29.2.1
 API version:       1.53
 Go version:        go1.25.6
 Git commit:        a5c7197
 Built:             Mon Feb  2 17:17:24 2026
 OS/Arch:           linux/amd64
 Context:           default

Server: Docker Engine - Community
 Engine:
  Version:          29.2.1
  API version:      1.53 (minimum version 1.44)
  Go version:       go1.25.6
  Git commit:       6bc6209
  Built:            Mon Feb  2 17:17:24 2026
  OS/Arch:          linux/amd64
  Experimental:     false
 containerd:
  Version:          v2.2.1
  GitCommit:        dea7da592f5d1d2b7755e3a161be07f43fad8f75
 runc:
  Version:          1.3.4
  GitCommit:        v1.3.4-0-gd6d73eb8
 docker-init:
  Version:          0.19.0
  GitCommit:        de40ad0
root@Services:~# docker info
Client: Docker Engine - Community
 Version:    29.2.1
 Context:    default
 Debug Mode: false
 Plugins:
  buildx: Docker Buildx (Docker Inc.)
    Version:  v0.31.1
    Path:     /usr/libexec/docker/cli-plugins/docker-buildx
  compose: Docker Compose (Docker Inc.)
    Version:  v5.0.0
    Path:     /usr/local/lib/docker/cli-plugins/docker-compose
  model: Docker Model Runner (Docker Inc.)
    Version:  v1.0.10
    Path:     /usr/libexec/docker/cli-plugins/docker-model

Server:
 Containers: 7
  Running: 7
  Paused: 0
  Stopped: 0
 Images: 7
 Server Version: 29.2.1
 Storage Driver: overlayfs
  driver-type: io.containerd.snapshotter.v1
 Logging Driver: journald
 Cgroup Driver: systemd
 Cgroup Version: 2
 Plugins:
  Volume: local
  Network: bridge host ipvlan macvlan null overlay
  Log: awslogs fluentd gcplogs gelf journald json-file local splunk syslog
 CDI spec directories:
  /etc/cdi
  /var/run/cdi
 Swarm: inactive
 Runtimes: io.containerd.runc.v2 runc
 Default Runtime: runc
 Init Binary: docker-init
 containerd version: dea7da592f5d1d2b7755e3a161be07f43fad8f75
 runc version: v1.3.4-0-gd6d73eb8
 init version: de40ad0
 Security Options:
  seccomp
   Profile: builtin
  cgroupns
 Kernel Version: 6.17.2-1-pve
 Operating System: Debian GNU/Linux 13 (trixie)
 OSType: linux
 Architecture: x86_64
 CPUs: 4
 Total Memory: 4GiB
 Name: Services
 ID: 0b2709d3-95de-4d71-9e53-ec08f2c42ea2
 Docker Root Dir: /var/lib/docker
 Debug Mode: false
 Experimental: false
 Insecure Registries:
  ::1/128
  127.0.0.0/8
 Live Restore Enabled: false
 Firewall Backend: iptables

i could manage to have a macvlan ipv6 connection working (even if i had to give myself the ipaddress, slaac not working), but no way to leave this connection up and adding a ipv4 bridge connection.
Thanks