I am experiencing problems when trying to cast to Google nest devices. I get the following error log. Does that ring a bell to anyone? Do I need a special WiFi setting to support this?
Thanks in advance. 
Logger: homeassistant.components.cast.media_player
Source: components/cast/media_player.py:316
Integration: Google Cast (documentation, issues)
First occurred: May 17, 2021, 7:08:11 AM (4 occurrences)
Last logged: 6:36:54 AM
Failed to cast media http://live-icy.gslb01.dr.dk/A/A14H.mp3. Please make sure the URL is: Reachable from the cast device and either a publicly resolvable hostname or an IP address