Problems after installing Node-RED on hass.io VM

Hi Community,

I am just starting with HA. Did load and setup the VHDX version of Hass io with HassOS. It is running fine. Then did install the Node-RED addon which also did work so far. I can start it and connect in the HA Web-UI to the Node-RED UI.
The URL is then http://hassio.local:8123/a0d7b954_nodered

But I cannot connect to http://hassio.local:1880 (ERR_CONNECTION_REFUSED).
And I cannot load additional Nodes, eg. Dashboard:

2019-05-07T07:06:56.323Z installieren : node-red-dashboard 2.14.0

2019-05-07T07:06:58.265Z npm install --no-audit --no-update-notifier --save --save-prefix=“~” --production [email protected]
2019-05-07T07:07:08.279Z [err] npm
2019-05-07T07:07:08.279Z [err] ERR! code ENETUNREACH
2019-05-07T07:07:08.279Z [err] npm ERR! errno ENETUNREACH
2019-05-07T07:07:08.281Z [err] npm
2019-05-07T07:07:08.281Z [err] ERR! request to [link removed]/http-errors failed, reason: connect ENETUNREACH 2606:4700::6810:1223:443 - Local (:::0)
2019-05-07T07:07:08.301Z [err]
2019-05-07T07:07:08.301Z [err] npm ERR! A complete log of this run can be found in:
2019-05-07T07:07:08.301Z [err] npm ERR! /root/.npm/_logs/2019-05-07T07_07_08_284Z-debug.log
2019-05-07T07:07:08.306Z rc=1

Probably IPv6 is not working. How can I disable it?

Thank you
/ Manuel

I too have the same issue, I cannot load the dashboard /ui via the ingress method.
Anyone out there have run into this and have a work around to get the dashboard URL to work on the latest HA 92.x?
mine would be host.domain.com:8123/ui I would think or the ingress url + /ui