I found a real truth of IPoIB definition last day.
There is a difference between IPoIB and Ethernet protocols.
Basic solution is eIPoIB support in vSphere environment.
I'll waitng next vSphere OFED release several years later.
I think IB on vSphere environment was not solid and flexible like Ethernet with DCB or iWARP.
There is Funny situations.
Windows VM DHCP Server to Windows DHCP client VM -> Success!
Windows VM DHCP Server to Linux DHCP Client VM -> Success!
Linux VM DHCP Server to Windows DHCP Client VM -> Success!
Linux VM DHCP Server to Linux DHCP Client VM -> Fail!
All test was proceeded in seperated ESXi 5.5 hosts and 4k IPoIB environment.
That's a very curious....
I found some information about this problem came from IPoIB features.
ESXi can't support eIPoIB interface currently. I'll waiting support it...:)