blueprint saving results in DC from peer
rejoining seems to be impossible for the saving player.

only way around that is actualy load a save game and do anything from hand

download 0.11 and copy it to applications .. it does WORK on yosemite

currently as far as i understand it its a 1:1 connection

if you want to run a regular gameserver the connection methods internaly would neeed to be changed to 1:S:1
since multiplayer as much as i know ( i can be wrong ) is currently limited to 2 players

..

i sayed you surly be able to use a proxy ..

in the end those are tcp connections right ?
a proxy can be a linux daemon .. however you can forward your local traffic torwards that proxy and use that as a star topologie for connecting and creating a Vlan .. software defined networking would be ...

well its a question how they implement the sync .. but putting a proxy onto a dedicated server to be reachable and play with other mates should be a easy thing todo ..

apart from that .. there are privat vlans like hamachi to bridge that gap

amazing .. cant wait .. !!!!

since apple released yosemite to the general public id call it a blocker
it cashes on startup.

Process: factorio [9043]
Path: /Applications/factorio.app/Contents/MacOS/factorio
Identifier: com.factorio
Version: 0.10.12 (0.10.12)
Code Type: X86-64 (Native)
Parent Process: ??? [1]
Responsible ...

OS - YOSEMITE FULL RELEASE

Process: factorio [1189]
Path: /Applications/factorio.app/Contents/MacOS/factorio
Identifier: com.factorio
Version: 0.10.12 (0.10.12)
Code Type: X86-64 (Native)
Parent Process: ??? [1]
Responsible: factorio [1189]
User ID: 501

Date/Time: 2014-10-17 06:37:37.687 +0100
OS ...