Minecraft Forums

After the 1.4.4 update, everytime I try and open my world to LAN, it opens it on 0.0.0.0:etc... Before the update, everything was working fine. I have no mods installed, and absolutely no firewalls blocking Minecraft. I am running this on a Window's 7 computer.

Again, it was working 100% okay before installed 1.4.4.
Again, there are no firewalls blocking it.

Any help you can offer will be extremely appreciated.

Me too. I have both a Mac and a PC and they exhibit the same problem: attempting to open the world on the LAN on 0.0.0.0:nnnn. The only change was updating to minecraft 1.4.4. It sounds like the same problem experienced by Linux users listed among the fixes in this release.

I'm new to the forum. Is this the best place to monitor for a work-around or fix to this problem or should I check elsewhere as well?

If you have Hamachi, you can access the LAN via the IP address. I'd imagine you'll probably be able to do it through your regular IP too.

Not a fix, but a work around until mojang fix their game.

I am also having the same problem...^^^ Anyone have any idea if this will be fixed eventually or is it not worth waiting for?

Same problem here, but I think they might fix it in another update.

Hopefully they will address this issue soon, it is widespread for people playing LAN and it is totally broken.

I to have the same problem. Either Minecraft is not getting an IP address from a DHCP server like a home gateway or router, or it is not reading the IP address of the NIC that is on the computer. I do not know which way the game was set up to get the IP address so I can not help in the fix. I can and have pointed out what was not happening. We will have to wait for the fix to this problem as it will have to be in the patch 1.4.5. Something in the Java codeing has gone wrong and MoJang and his fellow programers will have to search the code to find out what went wrong. Remember that there is no IP address that reads 0.0.0.0 as that will give an error when using networking tools. Now 1.0.0.0 could be an IP address though we would typicially see a Class C address for our systems.

Hey guys same problem here. But an quite good thank to torbunt - he made that 0.0.0.0 to an different number. now i have an another problem i can see that the ip changed when i try to open an lan game, but that ip is not that what i use - its different.

as far i can see matematica you told that the 0.0.0.0 need to be changed - dont tell me its the number in the server properties bcs if i change the number of the server properties from minecraft its still the first one what i obtained trough the downgrade.

Now where i have actually to write my ip adress (in wich file & where is it located) ty alot

Hey everyone, I've posted a work-around in this thread:
http://www.minecraftforum.net/topic/1564979-144-lan-server-issue-work-around-steps-on-how-to-connect-successfully/

Hopefully this helps. But yes, the root of the problem is that the host game is reporting an incorrect local IP of 0.0.0.0 to all the clients. To successfully connect you just need to directly connect to that host's local IP and port.

The root of the problem is that Open to LAN still doesn't work right

Pre 1.4.4 MC would pick an address on your computer, bind to it and advertise it to potential LAN clients.
Problem was that MC sometimes used an address that was not reachable by LAN clients (2nd network interface, VPN interface, VM interface).

In 1.4.4 MC doesn't pick any address but listens on all interfaces (which is what 0.0.0.0 means in a socket binding context). This is a good thing BUT now no address is being advertised to the LAN clients, so they don't know where the server is.

I'm pretty sure I saw someone point out this flaw in the Minecraft bug system during the pre release cycle.

Same problem here. Apparently 1.4.4 fixed a ton of glitches but it created a huge one.

Quote from mematematica

Aparently everyone is getting this problem with the 1.4.4 release. The issue here is that Minecraft is not retriving your local IP correctly as it used to, so we have to do it manually untill a fix is released. This is what worked in my case.

From eldiablo-dk:

Replace "0.0.0.0" with the IP-adress of the hosting computer. Anything on the right side of the ":" stays the same.
Example: 0.0.0.0:12345 --> 127.0.0.1:12345

Now, how to know the local IP address of the hosting computer?

From lifehacker.com:

Here are the instructions for Windows

1. Click on the Start menu and type cmd. When you see the cmd applications in Start menu panel, click it or just press enter.
2. A command line window will open. Type ipconfig and press enter.
3. You'll see a bunch of information, but the line you want to look for is "IPv4 Address." The number across from that text is your local IP address.

Here's how to do the same thing on a Mac:

1. Open System Preferences (via the Apple menu at the top lefthand corner of your screen).
2. When System Preferences opens, click on the icon labeled Network.
3. You should see a few options on the left with labels like Wi-Fi, Ethernet, Bluetooth, etc. The ones with green dots have IP addresses assigned to them. Click the one on top (if it isn't already selected) and look to the right. There should be a sentence that reads something like "Wi-Fi is connected to Chocolate and has the IP address 192.168.1.102." The number at the end of that sentence is your local IP address.

In Linux based OS, I believe the right command is /sbin/ifconfig as stated in linuxquestions.org. However, I'm unable to verify it.

Hope this helps you all.

Quote from mematematica

Please note that the "Fix" I posted only works for multiplayer within the same LAN. i.e. not servers. I was unaware the servers had problems with the recent patch.
You don't have to modify any file. Once you have the real local IP of the computer hosting the world and the 5 digit after the ":" generated by the game. Go to the second computer, run the game and click multiplayer, there click "direct connect". An entry box will appear and you put the real local IP followed by the ":" and the 5 digit number as usual.
Hope I answered you question.

These solutions worked perfectly for me on a LAN server. Thank you!!

Quote from nXcalibur

After the 1.4.4 update, everytime I try and open my world to LAN, it opens it on 0.0.0.0:etc... Before the update, everything was working fine. I have no mods installed, and absolutely no firewalls blocking Minecraft. I am running this on a Window's 7 computer.

Again, it was working 100% okay before installed 1.4.4.
Again, there are no firewalls blocking it.

Any help you can offer will be extremely appreciated.

Ok, I don't know if anyone else has said this but it opens on 0.0.0.0 because it is the 1.4.4 update that did it. In 1.4.5, it is going to fix it as it shows on this page: HERE

Yeah, I tried updating to 1.4.5 and still had the same problem on my mac and pc.
The easiest fix I believe is to open to lan world and have your friend log in by adding a server with the host's ip followed by the 5 numbers it gives you when you open the lan
For example you open it says "0.0.0.0:72593
your friend types in 1.2.3.4:72593 (1.2.3.4) being the host's ip

I tried using the ipv4, but no result.
I guess all I can do is just wait for Mojang to fix it, or just downgrade

It's not broken, so waiting for a fix is futile.

im getting the same problem in 1.4.7