You could send the orientation of the viewpoint from one machine and then grab the headbone of the avatar, and set its orientation to that. Something like this.
Code:
def sendData():
target_mailbox.send(euler = viz.MainView.getEuler())
and on the other machine
Code:
head = avatar.getBone('Bip01 Head')
head.lock()
def onNetwork(e):
head.setEuler(e.euler, viz.AVATAR_WORLD)