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    <title>Mojang Studios Jira</title>
    <link>https://bugs.mojang.com</link>
    <description>This file is an XML representation of an issue</description>
    <language>en</language>    <build-info>
        <version>9.12.2</version>
        <build-number>9120002</build-number>
        <build-date>10-01-2024</build-date>
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<item>
            <title>[MC-2549] LAN worlds still broken (Linux)</title>
                <link>https://bugs.mojang.com/browse/MC-2549</link>
                <project id="10400" key="MC">Minecraft: Java Edition</project>
                    <description>&lt;p&gt;It seems the server is identifying it&apos;s IP address as 0.0.0.0 now (obviously the address used to bind to all address - last fix).&lt;/p&gt;

&lt;p&gt;This results in clients failing to connect.&lt;/p&gt;</description>
                <environment>Linux</environment>
        <key id="14303">MC-2549</key>
            <summary>LAN worlds still broken (Linux)</summary>
                <type id="1" iconUrl="https://bugs.mojang.com/secure/viewavatar?size=xsmall&amp;avatarId=18903&amp;avatarType=issuetype">Bug</type>
                                    <status id="5" iconUrl="https://bugs.mojang.com/images/icons/statuses/resolved.png" description="A resolution has been taken, and it is awaiting verification by reporter. From here issues are either reopened, or are closed.">Resolved</status>
                    <statusCategory id="3" key="done" colorName="success"/>
                                    <resolution id="3">Duplicate</resolution>
                                        <assignee username="-1">Unassigned</assignee>
                                    <reporter username="gamaral">Guillermo Amaral</reporter>
                        <labels>
                    </labels>
                <created>Thu, 8 Nov 2012 22:07:34 +0100</created>
                <updated>Wed, 6 Mar 2013 10:13:17 +0100</updated>
                            <resolved>Mon, 17 Dec 2012 21:32:01 +0100</resolved>
                                    <version>Minecraft 1.4.4</version>
                                                                        <votes>7</votes>
                                    <watches>6</watches>
                                                                            <comments>
                            <comment id="22276" author="kumasasa" created="Fri, 16 Nov 2012 21:50:01 +0100"  >&lt;p&gt;So we can resolve this ticket as a duplicate of &lt;a href=&quot;https://bugs.mojang.com/browse/MC-2583&quot; title=&quot;People cannot join to LAN world: Local game hosted on 0.0.0.0&quot; class=&quot;issue-link&quot; data-issue-key=&quot;MC-2583&quot;&gt;&lt;del&gt;MC-2583&lt;/del&gt;&lt;/a&gt; ?&lt;/p&gt;</comment>
                            <comment id="22274" author="smcv" created="Fri, 16 Nov 2012 21:48:08 +0100"  >&lt;p&gt;The 1.4.5 prerelease seems to fix this in the way I suggested (part (3) only), and works for me (with two Linux machines, both upgraded). Please try again with that version.&lt;/p&gt;</comment>
                            <comment id="21557" author="falkan" created="Wed, 14 Nov 2012 22:57:32 +0100"  >&lt;p&gt;1.4.4 on linux it&apos;s workse than before (1.4.2) now, as I could tweak /etc/hosts manually before, which is no longer possible when opening to 0.0.0.0.&lt;/p&gt;

&lt;p&gt;Workaround: starting the world as a true SMP version.&lt;/p&gt;</comment>
                            <comment id="20214" author="maruichan" created="Sat, 10 Nov 2012 07:09:48 +0100"  >&lt;p&gt;I&apos;m not on Linux, but I&apos;m getting this issue with Windows 7 Ult x64. Particularly the 0.0.0.0 when I open to LAN... it&apos;s frustrating &lt;img class=&quot;emoticon&quot; src=&quot;https://bugs.mojang.com/images/icons/emoticons/sad.png&quot; height=&quot;16&quot; width=&quot;16&quot; align=&quot;absmiddle&quot; alt=&quot;&quot; border=&quot;0&quot;/&gt;&lt;/p&gt;</comment>
                            <comment id="19762" author="gamaral" created="Fri, 9 Nov 2012 00:26:48 +0100"  >&lt;p&gt;CubeTheThird, happens on any network, tested on wifi managed, wifi adhoc and wired.&lt;/p&gt;

&lt;p&gt;Simon&apos;s right, his 3rd point should fix this particular issue.&lt;/p&gt;</comment>
                            <comment id="19746" author="smcv" created="Fri, 9 Nov 2012 00:12:35 +0100"  >&lt;p&gt;I suggested three changes in a comment on #&lt;a href=&quot;https://bugs.mojang.com/browse/MC-473&quot; title=&quot;Linux users can&amp;#39;t open to lan because it&amp;#39;s binded to 127.0.0.1&quot; class=&quot;issue-link&quot; data-issue-key=&quot;MC-473&quot;&gt;&lt;del&gt;MC-473&lt;/del&gt;&lt;/a&gt;; it appears that (1) has been done, but (2) and (3) have not.&lt;/p&gt;

&lt;p&gt;The two remaining changes are:&lt;/p&gt;

&lt;p&gt;2) when announcing our address to the network, if listening on 0.0.0.0, replace it with (an attempt to find) our IP address in the &apos;AD&apos; packet (optional; only needed if you want to remain compatible with versions &amp;lt; 1.4.4)&lt;/p&gt;

&lt;p&gt;and more importantly&lt;/p&gt;

&lt;p&gt;3) when parsing an &apos;AD&apos; packet, ignore the IP address in the packet, and replace it with the address from which the packet was received&lt;/p&gt;

&lt;p&gt;If Minecraft was open source (or not obfuscated) I&apos;d have given you a complete patch &lt;img class=&quot;emoticon&quot; src=&quot;https://bugs.mojang.com/images/icons/emoticons/smile.png&quot; height=&quot;16&quot; width=&quot;16&quot; align=&quot;absmiddle&quot; alt=&quot;&quot; border=&quot;0&quot;/&gt; but as it is, a patch relative to the de-obfuscated source in MCP is the best I can do:&lt;/p&gt;

&lt;p&gt;&lt;a href=&quot;http://www.pseudorandom.co.uk/~smcv/minecraft-1.3.2-lan-server-v4.diff&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;http://www.pseudorandom.co.uk/~smcv/minecraft-1.3.2-lan-server-v4.diff&lt;/a&gt;&lt;/p&gt;

&lt;p&gt;(I had this working correctly as a mod for 1.3.2 / MCP 7.2; I can update it to 1.4.2 / MCP 7.19 if that would be useful, just ask.)&lt;/p&gt;

&lt;p&gt;The change in what MCP calls LanServerList.func_77551_a is the important bit. I doubt those names match what Mojang calls that class and function internally, though.&lt;/p&gt;</comment>
                            <comment id="19744" author="cubethethird" created="Fri, 9 Nov 2012 00:03:12 +0100"  >&lt;p&gt;What type of network are you using?&lt;/p&gt;</comment>
                    </comments>
                <issuelinks>
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                    <name>Duplicate</name>
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                                        <issuelink>
            <issuekey id="14347">MC-2583</issuekey>
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