IFM_50G_CR2
[MCX_ETHER_CAP_50G_CR2] = { IFM_50G_CR2, IF_Gbps(50) },
{ IFM_ETHER | IFM_50G_CR2 | IFM_FDX, "50GBASE-CR2" }, \
{ IFM_ETHER | IFM_50G_CR2, IF_Gbps(50) }, \