I have a scenario where I need some robots to connect to the hub over ipv6 and some need to connect over ipv4. I use the latest robot and hub versions. If I use the hub robot controller in ipv4 and ipv6 support mode, only robots with ipv6 address will work. If I use ipv4 mode, those with ipv6 address do not work.
I also opened a support ticket, but I wonder if anyone else uses ipv4 and 6 together and has come across the same problem?