http://forum.cockos.com/showthread.p...t=ableton+link
The developers replied in that thread, but never said they will implement it, and asked for some network dumps, which were posted, but no reply on if they have any interest.
It is starting to get a a bit annoying now with Reaper falling behind other hosts on standards, took an age to get VST3 and it is still a bit iffy support, we still have no ARA, and who knows if we will ever get Link support, all a bit sad really.