Config option to set default host IP to 127.0.0.1 instead of 0.0.0.0

[lng-sys]

Feature request description

Hi, when I use the option -p 80:80 to publish ports without specifying the host IP I would like Podman to assume 0.0.0.0 when running on servers and 127.0.0.1 when running on Linux desktop.

On Ubuntu 2x.04 LTS and Fedora 4x I get 0.0.0.0 when I don't specify anything (I check using podman ps) on rootless Podman. So I want to configure desktop installations to use 127.0.0.1.

I can achieve this with Docker by setting:

{
    "ip" : "127.0.0.1"
}

in /etc/docker/daemon.json.

I wasn't able to find the equivalent for Podman, so I opened a discussion and it was confirmed there isn't such option. I am expecting an option in containers.conf.

Notice that I want to be able to overwrite the IP when needed by using -p 0.0.0.0:80:80, so the option I am looking for must only overwrite what Podman assumes when no IP is specified (-p 80:80).

Thank you in advance.

Suggest potential solution

An option like ip=x.x.x.x in containers.conf.

Have you considered any alternatives?

I have considered using a variable like -p $IP:80:80 but this assumes the user is aware of this issue. As a sys-admin I would like to overwrite the behavior for desktop users so that they won't expose anything in the LAN by mistake.

Additional context

No response

[danishprakash]

/assign

[github-actions]

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