[Fixed] [0.13.9] Cant connect to a server ...

[DOSorDIE]

The problem is that my friend cant connect to our game what we have startet yesterday. Im the Server.
When he try to download the map it hang at 1,9 MB and not responding any more.
When the Savegame is under 2 MB then its works ... little more the 2 MB than it have a not responding but after a while it download more
With our "big" Savegame with 7,7 MB it doesnt work.
Here the Log File

factorio-current.log

(27.5 KiB) Downloaded 56 times

We have try it with no mods ... same problem.
We try it with direct IP, LAN, No Steam Version ... everytime the same problem.
Router has open Port 34197 UDP/TCP
Internet has 150/20 and he has 50/10 ... so that also not a problem.
Other Savegame doesnt work too.

HELP!

I have make a bunch video to see whats happend.

Here our Savegame with 7.708 KB
https://www.youtube.com/watch?v=kUTSZGHNias

Here Savegame with 2.404 KB
https://www.youtube.com/watch?v=DQbeR_xxIG8

And here a Savegame with 1.481 KB
https://www.youtube.com/watch?v=AHrrcPfL6iM

I hope you can fix that ... we want play together.

EDIT:
We are only 2 Players.

[Klonan]

Thanks for the report,

Hopefully this will be resolved with the multiplayer rewrite

[DOSorDIE]

I found a solution for my problem

My router i have a "Enable UDP flood defense" option and without that it works!
So my router think that that will be a attack.
Factorio send more than 2000 packets / sec ... and thats why it will be blocked.
With older Versions of Factorio it worked so i think it send more UDP packets as before.