I suspect the issue is either:
a) IPv4 and IPv6 both detected
b) old instances cached?
Just wondering if anyone else is seeing this ‘feature’ and knows how to disable it?!
I’ve rebooted Home Assistant a few times, even tried manually configuring these two Volumio nodes with their explicit IPv4 addresses. Reading the platform code in Github, if the node is manually defined, then it should not be picked up from auto-discovery. The below image is what currently appears.