Need help with IPv4/IPv6

[Rob Berens]

This is a repost of an earlier message. I have some problems that seem to be 
related to the interoperation of ipv4
client programs and ipv6 servers or the other way round.
Does anyone have some examples of how to configere FreeBSD to have a smooth 
interoperation of IPv4 and IPv6? What lines do I have to add to 
/etc/rc.conf.

I'm running FreeBSD 6.1 RELEASE. My problems are listed below.

Does anyone have some simple


I have the following problems:

MySQL and JDBC client
--------------------------

I run MySQL 5.1 server at the FreeBSD machine.
The msyql jconnecter version is 5.0.4.

Via netstat I can see MySQL run as a tcp4 server only.
When connecting to mysql from the server running mysql via the mysql client
program everything works as expected.
When connecting from a remote machine running ipv4 via both the mysql clent
program and via JDBC again everything works as expected.
When connecting from the server running mysql via JDBC I get the exception:
     com.mysql.jdbc.CommunicationsException: Communications link failure due
to underlying exception:
     java.net.SocketException: java.netConnectionException: Connection
refused

Jetty (org.mortbay.org)
-----------------------

When running jetty as a servelet engine/web server at the FreeBSD machine. I
cannot connect to the server from a remote machine running IPv4. Via netstat
I can see that jetty runs as a tcp6 server only.

SVN (subversion.tigirs.org)
---------------------------

Originally I had a simular problem connecting to svn from a ipv4 machine,
when svn was running as a tcp6 server.
Via a strange startup option (--listen-host=0.0.0.0) I could force svn to
run as tcp4. And connection from the remote host worked fine.

Tomcat
--------
I installed tomcat 5.5.20 from the BSD port. Tomcat does not start. The log
files shows the following:

Nov 6, 2006 8:22:39 AM org.apache.catalina.core.AprLifecycleListener
lifecycleEvent
INFO: The Apache Tomcat Native library which allows optimal performance in
production environments was not found on the java.library.path:
/usr/local/jdk1.5.0/jre/lib/i386/client:/usr/local/jdk1.5.0/jre/lib/i386:/usr/local/jdk1.5.0/jre/../lib/i386:/usr/lib:/usr/local/lib
Nov 6, 2006 8:22:40 AM org.apache.coyote.http11.Http11BaseProtocol init
INFO: Initializing Coyote HTTP/1.1 on http-8080
Nov 6, 2006 8:22:40 AM org.apache.catalina.startup.Catalina load
INFO: Initialization processed in 1303 ms
Nov 6, 2006 8:22:40 AM org.apache.catalina.core.StandardService start
INFO: Starting service Catalina
Nov 6, 2006 8:22:40 AM org.apache.catalina.core.StandardEngine start
INFO: Starting Servlet Engine: Apache Tomcat/5.5.20
Nov 6, 2006 8:22:40 AM org.apache.catalina.core.StandardHost start
INFO: XML validation disabled
Nov 6, 2006 8:22:41 AM org.apache.catalina.core.ApplicationContext log
INFO: org.apache.webapp.balancer.BalancerFilter: init(): ruleChain:
[org.apache.webapp.balancer.RuleChain:
[org.apache.webapp.balancer.rules.URLStringMatchRule: Target string: News /
Redirect URL: http://www.cnn.com],
[org.apache.webapp.balancer.rules.RequestParameterRule: Target param name:
paramName / Target param value: paramValue / Redirect URL:
http://www.yahoo.com],
[org.apache.webapp.balancer.rules.AcceptEverythingRule: Redirect URL:
http://jakarta.apache.org]]
Nov 6, 2006 8:22:41 AM org.apache.catalina.core.ApplicationContext log
INFO: ContextListener: contextInitialized()
Nov 6, 2006 8:22:41 AM org.apache.catalina.core.ApplicationContext log
INFO: SessionListener: contextInitialized()
Nov 6, 2006 8:22:41 AM org.apache.catalina.core.ApplicationContext log
INFO: ContextListener: contextInitialized()
Nov 6, 2006 8:22:41 AM org.apache.catalina.core.ApplicationContext log
INFO: SessionListener: contextInitialized()
Nov 6, 2006 8:22:42 AM org.apache.coyote.http11.Http11BaseProtocol start
INFO: Starting Coyote HTTP/1.1 on http-8080
Nov 6, 2006 8:22:42 AM org.apache.jk.common.ChannelSocket init
INFO: JK: ajp13 listening on /0.0.0.0:8009
Nov 6, 2006 8:22:42 AM org.apache.jk.server.JkMain start
INFO: Jk running ID=0 time=0/33  config=null
Nov 6, 2006 8:22:42 AM org.apache.catalina.storeconfig.StoreLoader load
INFO: Find registry server-registry.xml at classpath resource
Nov 6, 2006 8:22:42 AM org.apache.catalina.startup.Catalina start
INFO: Server startup in 2196 ms
Nov 6, 2006 8:22:42 AM org.apache.catalina.core.StandardServer await
SEVERE: StandardServer.await: create[8005]:
java.net.BindException: Can't assign requested address
at java.net.PlainSocketImpl.socketBind(Native Method)
at java.net.PlainSocketImpl.bind(PlainSocketImpl.java:359)
at java.net.ServerSocket.bind(ServerSocket.java:319)
at java.net.ServerSocket.<init>(ServerSocket.java:185)
at org.apache.catalina.core.StandardServer.await(StandardServer.java:372)
at org.apache.catalina.startup.Catalina.await(Catalina.java:615)
at org.apache.catalina.startup.Catalina.start(Catalina.java:575)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at
sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
at
sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
at java.lang.reflect.Method.invoke(Method.java:585)
at org.apache.catalina.startup.Bootstrap.start(Bootstrap.java:294)
at org.apache.catalina.startup.Bootstrap.main(Bootstrap.java:432)



Has anyone got any ideas what is wrong and how to solve these problems?
Is there a way to force the server to only run ipv4 or to force some
programs to run ipv4?

Please help!

Rob Berens


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