Hi 
InvmwareESXi5.1on HPDL360G6can notrunpassthroughfor the network adapter. NIChas82576chipsetand supportsSingleRootI/OVirtualization. Vmware still want me to reboot a host to start running a network adapter in passthrough mode. After rebooting is same.Here aresome logs fromdmesg:
0:00:00:04.503 cpu0:8192)PCI: 973: scanning pci bridge 0x41000f84a8b0 @ seg/bus 00:09
0:00:00:04.503 cpu0:8192)PCI: 6344: 09:00.0: PCIe v2 PCI Express Endpoint
0:00:00:04.503 cpu0:8192)PCI: 5327: 00:09:00.0: Found Advanced Error Reporting support
0:00:00:04.503 cpu0:8192)PCI: 5327: 00:09:00.0: Found Device Serial Number support
0:00:00:04.503 cpu0:8192)PCI: 5327: 00:09:00.0: Found Endpoint Association support
0:00:00:04.503 cpu0:8192)PCI: 5327: 00:09:00.0: Found Single Root I/O Virtualization support
0:00:00:04.503 cpu0:8192)PCI: 6277: 09:00.0: PCIe v2 PCI Express Endpoint
0:00:00:04.503 cpu0:8192)PCI: 6282: Not a ACS capable device
0:00:00:04.503 cpu0:8192)PCI: 6344: 09:00.1: PCIe v2 PCI Express Endpoint
0:00:00:04.503 cpu0:8192)PCI: 5327: 00:09:00.1: Found Advanced Error Reporting support
0:00:00:04.503 cpu0:8192)PCI: 5327: 00:09:00.1: Found Device Serial Number support
0:00:00:04.503 cpu0:8192)PCI: 5327: 00:09:00.1: Found Endpoint Association support
0:00:00:04.503 cpu0:8192)PCI: 5327: 00:09:00.1: Found Single Root I/O Virtualization support
0:00:00:04.503 cpu0:8192)PCI: 6277: 09:00.1: PCIe v2 PCI Express Endpoint
0:00:00:04.503 cpu0:8192)PCI: 6282: Not a ACS capable device
0:00:00:04.504 cpu0:8192)PCI: 3520: 00:09:00.0 8086:10e8 8086:a02c added
0:00:00:04.504 cpu0:8192)PCI: 3522: classCode 0200 progIFRevID 0001
0:00:00:04.504 cpu0:8192)PCI: 3526: intPIN A intLine 7
0:00:00:04.504 cpu0:8192)Chipset: 385: bus 09 isn't present
0:00:00:04.504 cpu0:8192)PCI: 4455: No direct hookup for 00:09:00.0
In addition,I attachscreenshotsfromvmware:
DirectPath I/O issupported...
After rebooting I have a same info: "This device needs host reboot to start running in passthrough mode" 
Thank you kindlyfor your help.
Best regards
Arek