1. I would appreciate if you marked quotes as auch, using >.
2. Do you think I didn’t read this? You obviously saw that I posted it in another comment, and I am mentioning info from the very text you posted here.
3. If you read the comments of the answer you copied, the OP of the question also said the following:

The following solutions worked: Static ARP entries and subnet-directed broadcasts. You may use one of both if you have the same scenario. Thanks for pointing me in the right direction.

Them mentioning that one ‘may use one of both’ makes me believe there is a way to make this work properly. The serverfault post is also mentioning the need to manage several machines this way, which is why I believe the answer you copied suggested using broadcast, as managing ARP entries for several machines could become tedious and unreliable.