Docs & code claim that Network.framework treats SO_REUSEADDR & SO_REUSEPORT as the same, don't think that's true

[weissi]

I don't think this comment is right.

swift-nio-transport-services/Sources/NIOTransportServices/NIOTSListenerChannel.swift

Lines 311 to 312 in cefc701

	// Network.framework munges REUSEADDR and REUSEPORT together, so we turn this on if we need
	// either.

That is the equivalent of SO_REUSEADDR. From what I can tell, it's not possible to do SO_REUSEPORT from Network.framework, at least I haven't managed to bind two processes to the same port.