Thanks André remind me this issue, I'm using vmxnet3 not E1000 adapter.
But, why vESXi-02 ping vESXi-01 management IP=172.16.10.111 didn't appear duplicate ICMP response ?!
Why vESXi-02 ping vESXi-01 vmkernel IP=172.16.20.111 will appear duplicate ICMP respnse ?!
I'll go to change vmxnet3 to E1000 for testing this again, and report the result here.