error: EC2 machine 'm' does not have a private IPv4 address (yet) about nixops-aws

[coretemp]

There is another inconsistency here, which is that
ssh -i a.pem root@<ip as rapported by AWS Console> works.

IMHO, nixops ssh m should work in at least the cases that ssh works as displayed by the Amazon Connect button.

All this happened when I was downgrading (the instance type) of two exactly the same machines of which only one came up fine (let's call that machine n).

[coretemp]

nixops check returns:

m............> warning: IP address has changed, you may need to run ‘nixops deploy’, which is not useful, because nixops deploy has no effect at all.