Does Roon need IPv6 to work?

I’ve been running Roon on my Linux desktop using wine and it’s been working without issue or hiccup. I just disabled IPv6 on my desktop by passing ipv6.disable=1 to the kernel at boot time. Since doing this and firing up Roon the splash screen appears and then closes as always then I’m dropped back in a terminal… so I’m guessing Roon expects to see IPv6 enabled?

No but I’m guess you still have ipv6 remenents in your system that is causing something to misbehave.