Would be good if they offer it upfront or as an add-on during order
but currently you can request it as referred here https://docs.hetzner.com/robot/dedicated-server/general-info...
but currently you can request it as referred here https://docs.hetzner.com/robot/dedicated-server/general-info...
If you search for “10G dedicated uplink” and look in the rightmost column it covers what they will support requests on.
I’ve successfully used it on AX and SX many times and I’d be happy to see Hetzner also support RX!