microk8s: Ingress no longer exposing services on port 80

I’ve installed microk8s v1.21.0 from latest/edge and added the ingress addon, but microk8s isn’t listening on port 80.

This certainly used to be possible, as it’s been used in various demos. In some discussions about this issue it was suggested that it could be related to reinstalling microk8s (i.e. something isn’t removed on uninstall). I ran sudo snap remove --purge microk8s and then sudo snap install microk8s --classic --channel=latest/edge followed by enabling the dns, dashboard, registry, storage and ingress addons.