When there is active Remote Direct Memory Access (RDMA) for vSAN clusters and any cluster host has NICs outside the vSAN configuration, the vSAN Skyline Health check "Network (RDMA NIC: RoCE v2) is vSAN certified" also lists the result for such NICs.
VMware vSAN 8.0.x
Product defect
For a resolution, users can
1. Ignore the issue as it doesn't affect vSAN functionality
2. Silence the Skyline Health test
2. Update vCenter to 80P05 or 9.0 or newer versions, once available.