Linux Server - IPv6 support

In our game we’d like to have an ability to connect to the dedicated server using IPv6 connection.

Can anyone confirm that current UE4 version enables IPv6 on Linux (the platform our dedicated server runs on) please?

My quick research shows that the only platform that has PLATFORM_HAS_BSD_IPV6_SOCKETS set to 1 by default is IOS, is there a reason for that?

As far as I know the only reason why it is enabled on iOS is because it is a requirement of the App store. No idea how functional it is on other platforms if you enable it.