@Halo @SuperSnekFriend it's funny because Realtek is a very shitty NIC, but it's cheap as fuck so every manufacturer uses it in most of their boards. Heck, I have a premium Asus model here, and it uses a fucking Realtek.
So technically it would make sense for them to support it because it's the card most people have access to, but they don't bother with it because probably in their minds "people who are taking this SERIOUSLY will buy an Intel i219 with TCP offloading and other assorted bullshit", and this kind of mentality seeps into their users.