Network access broken in JOSM

[bilbo]

JOSM (Revision: 2645) seems to be unable to conect to network, during startup MOTD loading fail and I see this message on console:

Warning: failed to read MOTD from '​http://josm.openstreetmap.de/wiki/StartupPage'. Exception was: java.net.SocketException: Network is unreachable

... and loading any data from server or tiles form slippy map fails

However, I can open ​http://josm.openstreetmap.de/wiki/StartupPage in my browser normally, and I can see the map tiles in map at openstreetmap.org, so my internet connection to OSM servers is working fine.
I guess there must be problem somewhere in JOSM (I have not changed anything in the JOSM configuration for quite a long time, several weeks at least).

Also, during loading, I see this:

loading remotecontrol
java.net.SocketException: Invalid argument

at java.net.PlainSocketImpl.socketBind(Native Method)
at java.net.PlainSocketImpl.bind(PlainSocketImpl.java:365)
at java.net.ServerSocket.bind(ServerSocket.java:319)
at java.net.ServerSocket.<init>(ServerSocket.java:185)
at org.openstreetmap.josm.plugins.remotecontrol.HttpServer.<init>(HttpServer.java:37)
at org.openstreetmap.josm.plugins.remotecontrol.RemoteControlPlugin.restartServer(RemoteControlPlugin.java:42)
at org.openstreetmap.josm.plugins.remotecontrol.RemoteControlPlugin.<init>(RemoteControlPlugin.java:21)
at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)
at sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:39)
at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:27)
at java.lang.reflect.Constructor.newInstance(Constructor.java:513)
at java.lang.Class.newInstance0(Class.java:355)
at java.lang.Class.newInstance(Class.java:308)
at org.openstreetmap.josm.plugins.PluginInformation.load(PluginInformation.java:184)
at org.openstreetmap.josm.plugins.PluginHandler.loadPlugins(PluginHandler.java:208)
at org.openstreetmap.josm.gui.MainApplication.main(MainApplication.java:162)

As a result I can't donwload any data, MOTD or view the slippymap and the error messages are not very helful.

[bilbo]

I found a cause of this bug, it is a setting introduced recently as default on debian sid:

​http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=560044

Question is - can JOSM do somehing so it would also work with net.ipv6.bindv6only set to 1, or is it a general Java problem and JOSM can't do anything with it?

[Vincy]

Using the easiest workaround from the Debian bug report,
start josm from the command line with:

java -Djava.net.preferIPv4Stack=true -jar josm.jar

Works for me...

[anonymous]

Because Openstreetmap also uses/will use donations and services from open-government-initiatives it should implement IPv6 access. Otherwise it might not meet the criteria for such services/aids. At least in Europe there are a lot of initiatives where IPv6 will be mandatory in near future

​http://europa.eu/rapid/pressReleasesAction.do?reference=IP/08/803&format=HTML&aged=0&language=EN&guiLanguage=en

[Gubaer]

Looks like a plattform/java vm/network stack problem. Nothing JOSM could do about that.

Closing as invalid.