Package: openjdk-6-jre
Version: 6b17~pre3-1
Severity: normal
The default value of /proc/sys/net/ipv6/bindv6only has recently changed from 0
to 1 which has broken most Java network related code (both in sun-java and
OpenJDK)
For example creating a client socket will fail (before even connecting it) when
bindv6only=1.
Compile and run this test case.
----- start of Test.java
public class Test {
public static void main(String args[]) {
try {
new java.net.Socket("localhost",22);
} catch (Exception e) {
e.printStackTrace();
}
}
}
----- end of Test.java
With bindv6only at default value of 1
$ java Test
java.net.SocketException: Network is unreachable
at java.net.PlainSocketImpl.socketConnect(Native Method)
at java.net.PlainSocketImpl.doConnect(PlainSocketImpl.java:333)
at java.net.PlainSocketImpl.connectToAddress(PlainSocketImpl.java:195)
at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:182)
at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:366)
at java.net.Socket.connect(Socket.java:525)
at java.net.Socket.connect(Socket.java:475)
at java.net.Socket.<init>(Socket.java:372)
at java.net.Socket.<init>(Socket.java:186)
at Test.main(Test.java:4)
$
Change the value of bindv6only back to 0
# echo 0 > /proc/sys/net/ipv6/bindv6only
and now
$ java Test
$
runs without error.
-- System Information:
Debian Release: squeeze/sid
APT prefers testing
APT policy: (500, 'testing')
Architecture: i386 (i686)
Kernel: Linux 2.6.30-2-686 (SMP w/1 CPU core)
Locale: LANG=en_GB.UTF-8, LC_CTYPE=en_GB.UTF-8 (charmap=UTF-8)
Shell: /bin/sh linked to /bin/bash
Versions of packages openjdk-6-jre depends on:
ii dpkg 1.15.5.5 Debian package management system
ii libaccess-bridge-java- 1.26.2-3 Java Access Bridge for GNOME (jni
ii libasound2 1.0.21a-1 shared library for ALSA applicatio
ii libc6 2.10.2-2 GNU C Library: Shared libraries
ii libgif4 4.1.6-8 library for GIF images (library)
ii libjpeg62 6b-15 The Independent JPEG Group's JPEG
ii libpng12-0 1.2.41-1 PNG library - runtime
ii libpulse0 0.9.21-1 PulseAudio client libraries
ii libx11-6 2:1.3.2-1 X11 client-side library
ii libxext6 2:1.0.4-1 X11 miscellaneous extension librar
ii libxi6 2:1.2.1-2 X11 Input extension library
ii libxrender1 1:0.9.5-1 X Rendering Extension client libra
ii libxtst6 2:1.0.3-1 X11 Testing -- Resource extension
ii openjdk-6-jre-headless 6b17~pre3-1 OpenJDK Java runtime, using Hotspo
ii zlib1g 1:1.2.3.3.dfsg-15 compression library - runtime
openjdk-6-jre recommends no packages.
Versions of packages openjdk-6-jre suggests:
pn icedtea6-plugin <none> (no description available)
-- no debconf information
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