On Unix you typically fork as a part of initializing your application in order to demonize. Or when you are executing another program so a fork/exec. The first

On Unix you typically fork as a part of initializing your application in order to demonize. Or when you are executing another program so a fork/exec. The first one isn't needed in a unikernel. You are already demonized when you boot up. The second use is not available to unikernel applications. The limitation of a single application per vm applies.