[User story] ip

[gbraad]

This command should return the IP that has been assigned to the VM.

When the VM does not exist, the command should not return a value, but an error code.

[jsliacan]

The only questions that come to mind (and I already pre-asked them to make sure they're at least a little bit sensible) are below. Maybe answers to them could preemptively be part of the command definition.

1. IP format is IPv4 (ever IPv6 in the future?)?
2. Which of the following (or other?) IP addresses is or could be returned?
   • Public: static or dynamic (e.g. behind a domain name)
   • Primary: the one you use to access VM from the host on which it's running
   • Secondary: like primary but additional
   • NAT private network IP: I guess if the VM was connected to a private network?
   • etc. (don't know, could be other cases).
3. Under which circumstances does the command fail?
   • the VM does not exist
   • VM exists but isn't assigned an IP (can this happen?)

Another thing to consider is cross-checks among commands to avoid some rogue behavior of one of them. As an example, I'd expect the following to be true (wrt crc ip command):

• crc status returns Running (for the VM) iff crc ip exits with code 0 (but maybe VM can be running and have no IP? no idea)
• If crc ip exits with 1, then crc stop exits with 1. (converse not true!)
• crc delete fails iff crc ip exits with 1
• etc.

[stale]

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