nerdctl network create lacks --internal #4444
Description
(docker|podman) network create --internal is known to be used in Gemini CLI's sandbox, etc.
https://github.com/google-gemini/gemini-cli/blob/c7a1de49832b7a5a6f62115085620dea97eb92cc/packages/cli/src/utils/sandbox.ts#L522-L536