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    Dlink DUB-E250 2.5Gbps ethernet adapter reports no auto-negotiation and only half duplex?

    Hi All, Thought I'd try a couple of Dlink DUB-250 USB 2.5Gbps ethernet adapters (on two different proxmox nodes) but both only seem to connect at half duplex and both report auto-negotiation is not supported/enabled yet the dlink website suggests they should support this...