Multi-network support?

[picnicbob]

I haven't been able to find info on whether Containerization in macOS 26 supports multiple container networks/subnets or if all containers per host machine will have to be on the same subnet and therefore be able to communicate. It's important (for me) that certain container groups are isolated from others.

[keyek]

are you able to get multiple containers in same host to communicate? I am not able to find any command similar to 'docker network'.

[altaic]

It's being worked on presently:
#243

[picnicbob]

I'm still running macOS 15 which isn't supposed to support networking for more than the first container so I haven't tried. macOS 26 is supposed to support cross-container networking but I haven't found any network-specific configuration options which makes me a little worried.

[keyek]

macOS 26 is supposed to support cross-container networking but I haven't found any network-specific configuration options which makes me a little worried.

I am running MacOS 15 too. There is no 'network' config related options as far as I have explored... good to know MacOS 26 might support that later.

[jglogan]

macOS 15 creates a single default network, and that's it, which is why there's no container network subcommand as there is when running on Tahoe.

For macOS 15: As long as you're not hitting the issue described in the technical overview where network subnet doesn't agree with the IPs allocated by container when starting containers, each container has network access to and from the outside. However, the containers have no network access to each other. You need to be running Tahoe for this.