本周我将Android Studio更新为2.0版。关于Gradle有一个known issue，所以我将export _JAVA_OPTIONS="-Djava.net.preferIPv6Addresses=true"添加到我的〜/ .profile（在Ubuntu 15.10上）。
但是现在我在编译时遇到了这个错误：
Error:Abnormal build process termination:
Picked up _JAVA_OPTIONS: -Djava.net.preferIPv6Addresses=true
Build process started. Classpath: /opt/android-studio/lib/jps-launcher.jar:/usr/lib/jvm/java-8-oracle/lib/tools.jar:/opt/android-studio/lib/optimizedFileManager.jar:/opt/android-studio/lib/ecj-4.4.jarError connecting to ::1:44484; reason: Protocol family unavailable: /0:0:0:0:0:0:0:1:44484
java.net.SocketException: Protocol family unavailable: /0:0:0:0:0:0:0:1:44484
at sun.nio.ch.Net.connect0(Native Method)
at sun.nio.ch.Net.connect(Net.java:454)
at sun.nio.ch.Net.connect(Net.java:446)
at sun.nio.ch.SocketChannelImpl.connect(SocketChannelImpl.java:648)
at io.netty.channel.socket.nio.NioSocketChannel.doConnect(NioSocketChannel.java:210)
at io.netty.channel.nio.AbstractNioChannel$AbstractNioUnsafe.connect(AbstractNioChannel.java:207)
at io.netty.channel.DefaultChannelPipeline$HeadContext.connect(DefaultChannelPipeline.java:1208)
at io.netty.channel.ChannelHandlerInvokerUtil.invokeConnectNow(ChannelHandlerInvokerUtil.java:117)
at io.netty.channel.DefaultChannelHandlerInvoker.invokeConnect(DefaultChannelHandlerInvoker.java:248)
at io.netty.channel.AbstractChannelHandlerContext.connect(AbstractChannelHandlerContext.java:218)
at io.netty.channel.ChannelOutboundHandlerAdapter.connect(ChannelOutboundHandlerAdapter.java:47)
at io.netty.channel.ChannelHandlerInvokerUtil.invokeConnectNow(ChannelHandlerInvokerUtil.java:117)
at io.netty.channel.DefaultChannelHandlerInvoker.invokeConnect(DefaultChannelHandlerInvoker.java:248)
at io.netty.channel.AbstractChannelHandlerContext.connect(AbstractChannelHandlerContext.java:218)
at io.netty.channel.ChannelOutboundHandlerAdapter.connect(ChannelOutboundHandlerAdapter.java:47)
at io.netty.channel.ChannelHandlerInvokerUtil.invokeConnectNow(ChannelHandlerInvokerUtil.java:117)
at io.netty.channel.DefaultChannelHandlerInvoker.invokeConnect(DefaultChannelHandlerInvoker.java:248)
at io.netty.channel.AbstractChannelHandlerContext.connect(AbstractChannelHandlerContext.java:218)
at io.netty.channel.AbstractChannelHandlerContext.connect(AbstractChannelHandlerContext.java:212)
我该怎么办？
答案 0 :(得分：2)
使用相反的旗帜_JAVA_OPTIONS = -Djava.net.preferIPv4Stack=true