NDIS6 - MiniportRestart

Hello,
I have a question on MiniportRestartParameters coming in as parameter to MiniportRestart entry point. WDK says, the miniport driver can alter the members of MiniportRestartParameters structure. What I am not clear is if NDIS sends a different MTU size in MiniportRestartParameters than what is supported by miniport driver, can minport driver change MTU size in MiniportRestartParameters as supported or the miniport driver needs to change the supported MTU size by reconfiguring the hardware and buffers ?

Thanks,
Prabhath