I am trying to set all of my TrueNAS SCALE systems to operate IPv6-Only.
There seem to be several problems regarding that, as several iXsystems hosted core web services are not available via IPv6. There simply is no AAAA record present, so there is no possibility to resolve the hostname to be used, therefore the connections fails.
This is apparently not true.
At least the update URL (update.ixsystems.com) cannot be resolved via IPv6-only, therefore neither 24.10 nor 25.04 are fully supporting IPv6.