I understand you can expose a virtual url such as local.dev using ngrok http -host-header=local.dev.
However I can't seem to expose a virtual host of the following format sub.local.dev. If I enter the ngrok command: ngrok http -host-header=sub.local.dev it just looks forwards the following url which does not exist: http://.local.dev:80.
Please tell me there is some way to do this