Okay, now I think I know where the problem is. It seems to be in bond mode. I changed the current bond mode from the original SLB to the current active-standby mode. VMM works and can create virtual machine clusters normally.
However, there is still a strange problem. When network ports> 4, the 5th network port still cannot recognize the real mac address.
But it does not affect my use now, and I just updated 25426 update3, everything seems to be fine.
Both my read cache and hardware transcoding are available.