[h323plus] Socket aggregation not yet implemented on Unix?

Hello,

I have tried to compile H323Plus with Signaling and RTP aggregation, so I assumed that I needed to compile PTLib with socket aggregation first using "./configure --enable-sockagg"

However, during the PTLib compilation I receive the message:

"aggregation not yet implemented on Unix"

Is there any ETA about this feature?

Also, is this feature fully available on Windows?