Why SR-IOV Virtual Function (VF) Still Works when Physical Function (PF) is down in Intel® Ethernet Network Adapter X710

Intel® Ethernet Controller X710 Intel® Ethernet Network Adapter E810-CQDA2 800 Series Network Adapters Intel® Ethernet Network Adapter X710-DA2 for OCP 3.0 Intel® Ethernet Controller X710-BM2 Legacy Intel® Killer™ Ethernet Products Intel® PRO/10GbE SR Server Adapter Series 500 Series Controllers (up to 10GbE) Intel® Ethernet Server Adapter I210 Series Intel® Ethernet Controller XL710-BM1 Intel® Ethernet Controller X550-AT2 Intel® 82578DC Gigabit Ethernet PHY Intel® Gigabit ET Quad Port Server Adapter Intel® Ethernet Converged Network Adapter X520-LR1 Intel® PRO/100 VM Adapter Series Intel® Ethernet Converged Network Adapter X520-DA2 NetEffect™ Ethernet Mezzanine Cluster Adapter -H Intel® Ethernet Controller E610 Intel® Ethernet Network Adapter XXV710-DA2 Intel® Ethernet Network Adapter X710-T4L for OCP 3.0 Intel® 10 Gigabit CX4 Server Adapter Series NetEffect™ Ethernet Adapters Intel® Ethernet Network Adapter X722 Intel® Ethernet Software Intel® Ethernet Controller X540 Intel® PRO/1000 F Server Adapter Series Intel® 82566MC Gigabit Ethernet PHY Intel® PRO/100 ISA Adapter Series Intel® Ethernet Converged Network Adapter X550-T2 Intel® 82579LM Gigabit Ethernet PHY NetEffect™ Ethernet Server Cluster Adapter DA Intel® Ethernet Converged Network Adapter X550-T1 Intel® Ethernet Converged Network Adapter X520 Series Intel® Gigabit CT Desktop Adapter Intel® 10 Gigabit XF SR Dual Port Server Adapter Intel® Ethernet Converged Network Adapter X710 Intel® 82566MM Gigabit Ethernet PHY Intel® Ethernet Network Adapter E610-XT2 Ethernet Products Gigabit Ethernet Adapters (up to 2.5GbE) Intel® Ethernet Converged Network Adapter X540-T2 Intel® Gigabit EF Server Adapter Series Intel® 10 Gigabit AT Server Adapter Series Intel® Ethernet Network Adapter XXV710 Intel® Ethernet E810 Network Adapters (up to 100GbE) Intel® Ethernet Converged Network Adapter X540-T1 Intel® Ethernet Network Adapter E610-XT2 for OCP 3.0 Intel® Ethernet Controller I226 Series NetEffect™ Ethernet Server Cluster Adapter DA2 Intel® PRO/1000 PM Adapter Series Intel® PRO/10GbE LR Server Adapter Series Intel® Killer™ Ethernet E3000 2.5 Gbps Intel® Ethernet Server Adapter X710-DA2 for OCP Intel® Ethernet Network Adapter E810-XXVDA2 Intel® Ethernet Controller XL710-AM2 Intel® Ethernet Server Adapter X520 Intel® Killer™ Ethernet E3100 2.5 Gbps Intel® 82577LC Gigabit Ethernet PHY Intel® PRO/1000 CT Network Connection Intel® 82578DM Gigabit Ethernet PHY Intel® PRO/1000 MT Desktop Adapter Series Intel® Killer™ Ethernet Controller Intel® Ethernet Server Adapter X520-DA1 for Open Compute Project Intel® Ethernet Network Adapter XXV710-DA1 for OCP Intel® Gigabit CT Desktop Adapter Series Intel® Ethernet Network Adapter I350-T4 for OCP 3.0 Intel® Killer™ Ethernet Products Intel® 82577LM Gigabit Ethernet PHY Intel® Ethernet Controller XL710 Intel® PRO/1000 PM Network Connection Intel® Ethernet Network Adapter E610-IT4 for OCP 3.0 Intel® 82578 Gigabit Ethernet PHY Intel® Ethernet Network Adapter XXV710-DA1 Intel® PRO/1000 PF Dual Port Server Adapter Intel® PRO/1000 GT Desktop Adapter Intel® Ethernet Converged Network Adapter X710-DA2 Intel® Ethernet Converged Network Adapter X520-SR1 Intel® Ethernet Server Adapter I210-T1 Intel® Killer™ Ethernet E2600 Intel® 82579V Gigabit Ethernet PHY Intel® 10 Gigabit XF LR Server Adapter Intel® Ethernet Server Adapter X520-DA2 for Open Compute Project NetEffect™ Ethernet Server Cluster Adapter CX4 Intel® Gigabit VT Quad Port Server Adapter Series Intel® Ethernet Converged Network Adapter XL710-QDA1 Intel® Ethernet Network Adapter I350 Series Intel® Ethernet Converged Network Adapter X710-T4 Intel® Ethernet Server Adapter I340 Series 800 Series Controllers (up to 200GbE) Intel® PRO/1000 PF Quad Port Server Adapter Intel® PRO/100 S Management Adapter Series Xircom® Networking & Modem Adapters Intel® PRO/1000 MT Server Adapter Series Intel® 10 Gigabit XF Server Adapter Series Intel® 10 Gigabit AF DA Dual Port Server Adapter Intel® Ethernet Controller X710-AM2 Intel® Ethernet Controller I225 Series Intel® Ethernet Server Adapter I340-F4 Intel® Ethernet Network Adapter X722-DA4 Intel® Ethernet Converged Network Adapter X520-T2 Gigabit Ethernet Controllers (up to 2.5GbE) Intel® Ethernet Controller E610-IAT2 Intel® Ethernet Network Adapter E610-IT4 Intel® Gigabit ET Dual Port Server Adapter Intel® PRO/1000 XT Server Adapter Series Intel® PRO/100 VM Network Connection 500 Series Network Adapters (up to 10GbE) Intel® Ethernet Network Adapter X722-DA2 Intel® Ethernet Server Adapter I350-F2 Intel® PRO/1000 CT Adapter Series Intel® PRO/1000 PT Server Adapter Intel® Ethernet Controller XL710-AM1 Intel® PRO/1000 Gigabit Server Adapter Series Intel® 10 Gigabit AF Server Adapter Series Intel® Ethernet Connection I219 Series Intel® 82579 Gigabit Ethernet Controller NetEffect™ Ethernet Server Cluster Adapter SFP+ SR Ethernet Connections (up to 100GbE) Intel® 10 Gigabit AT2 Server Adapter Intel® Killer™ Ethernet E2500v2 Intel® PRO/1000 PF Server Adapter Series Intel® PRO/1000 GT Server Adapter Series Intel® Ethernet Network Adapter X710-DA4 for OCP 3.0 Intel® Ethernet Network Adapter E610 Intel® Gigabit EF Dual Port Server Adapter Intel® Ethernet Server Adapter X520-DA2 Intel® Ethernet Controller X540-AT2 Intel® PRO/100 M Desktop Adapter Series Intel® PRO/100 Smart Adapter Series Intel® PRO/100+ Management Adapter Series Intel® Ethernet Converged Network Adapter X540 Intel® 82566DC Gigabit Ethernet PHY Intel® 82566DM Gigabit Ethernet PHY Intel® Ethernet Server Adapter I350-T2 Intel® Gigabit ET2 Quad Port Server Adapter Intel® Ethernet Network Adapter X710-T2L Intel® Gigabit ET Server Adapter Series Multi-host Controllers (up to100GbE) Intel® Ethernet Server Adapter I340-T4 Intel® 10 Gigabit CX4 Dual Port Server Adapter 700 Series Network Adapters (up to 40GbE) Intel® 10 Gigabit XF SR Server Adapter Intel® Ethernet Network Adapter E610-XT4 for OCP 3.0 Intel® Ethernet Network Adapter E610-XT4 Intel® PRO/1000 PT Server Adapter Series Intel® Ethernet Controller E610-XAT2 Intel® Ethernet Controller X550 Intel® Ethernet Server Adapter I350 Series Intel® Ethernet Controller XL710-BM2 600 Series Controllers (up to 10GbE) Intel® PRO/1000 PT Quad Port Server Adapter Intel® PRO/1000 PT Dual Port Server Adapter Intel® Ethernet Network Adapter X710 Intel® PRO/100B Adapter Series Intel® Ethernet Network Adapter X710-T2L for OCP 3.0 Intel® 82567 Gigabit Ethernet Controller Intel® Ethernet Fabric Suite (Intel® EFS) Intel® PRO/1000 T Server Adapter Series Intel® Ethernet Network Adapter X710-T4L NetEffect™ Ethernet Server Cluster Adapter SFP+ SR2 Intel® PRO/100 S Desktop Adapter Series Intel® Ethernet Controller X550-BT2 Intel® PRO/1000 GT Desktop Adapter Series Intel® PRO/1000 T Desktop Adapter Series Intel® Ethernet Converged Network Adapter XL710-QDA2 Intel® Ethernet Network Adapter E810-CQDA1 Intel® PRO/1000 MF Server Adapter Series Intel® Ethernet Converged Network Adapter X710-DA4 Intel® Ethernet Converged Network Adapter X520-SR2 Intel® PRO/1000 PT Desktop Adapter Series Intel® Ethernet Server Adapter I350-F4 Intel® Ethernet Server Adapter I350-T4 700 Series Controllers (up to 40GbE) Intel® PRO/1000 XF Server Adapter Series Intel® PRO/100 VE Network Connection Intel® Ethernet Converged Network Adapter X550 Intel® PRO/1000 MT Server Adapter Intel® PRO/1000 PF Server Adapter Intel® 82566 Gigabit Ethernet PHY 600 Series Network Adapters (up to 10GbE) Intel® Ethernet Converged Network Adapter X520-QDA1 Intel® Ethernet Controller E610-XAT Intel® Ethernet Controller X550-AT Intel® PRO/100 VE Adapter Series Intel® Ethernet Network Adapter E810-XXVDA4 Intel® PRO/1000 GT Quad Port Server Adapter Intel® 82577 Gigabit Ethernet PHY Intel® Ethernet Network Adapter XXV710-DA1 for OCP Intel® Ethernet Converged Network Adapter XL710 NetEffect™ Ethernet Mezzanine Cluster Adapter -I