Make an RDMA-capable interface appear inside a pod, choose correctly between the shared and exclusive designs, and name every place the path can fail.

1. 2.1 How kubelet learns a NIC existsThe pod that never left PendingU
2. 2.2 SR-IOV plumbing: device plugin, CNI and operatorThe NAD that set a priority and no VLANAp
3. 2.3 RDMA in pods: shared plugin vs exclusive netnsThe node that was hardened at 02:10An
4. 2.4 RoCE, GID tables and the NCCL knobs that read themThe slow fabric that was never on the fabricAn
5. 2.5 vfio-pci for VMs, and the DRA SR-IOV driverThe appliance that owned the cardAn
6. Checkpoint