Java Security

Hi all,
(this is a crosspost from the Networking Forum, it fits better here, I think http://forum.java.sun.com/thread.jspa?threadID=5256171&tstart=0 )

I am trying to open an ssl connection (https) to an URL containing the ip adress as numbers, like https://1.2.3.4 (this is not the real adress).
The certifcate I use is valid and contains the IP Number in the common name.
On opening the connection I always get an IOException: https hostname wrong: should be <1.2.3.4>
Turning on debugging with -Djavax.net.debug=all doesn't give any more hints.

With a URL like https://login.yahoo.com, it works. I'm using Java SE 1.5.0_11.

Now, I know the URL should give the IP address as a name, like https://site.domain.country, but I wonder if I must do it that way?
Isn't there a workaround / switch in order to use an ip number?
Is it to use an own HostnameVerifier as suggested in Thread SSLException: Name in certificate "host1" does not match host name "host2" (http://forum.java.sun.com/thread.jspa?threadID=5224956&tstart=60)

Thanks for any help!

Here is the stack trace:
java.io.IOException: HTTPS hostname wrong: should be <1.2.3.4>
at sun.net.www.protocol.https.HttpsClient.checkURLSpoofing(HttpsClient.java:490)
at sun.net.www.protocol.https.HttpsClient.afterConnect(HttpsClient.java:415)
at sun.net.www.protocol.https.AbstractDelegateHttpsURLConnection.connect(AbstractDelegateHttpsURLConnection.java:170)
at sun.net.www.protocol.https.HttpsURLConnectionImpl.connect(HttpsURLConnectionImpl.java:133)
at de.sema.diwi.ss.oraxml.XMLHttp.doPost(XMLHttp.java:231)
at de.sema.diwi.ss.oraxml.XMLHttp.doPost(XMLHttp.java:90)
at de.sema.diwi.ss.util.XMLReqRes.doXMLPost(XMLReqRes.java:741)
at de.sema.diwi.ss.util.XMLReqRes.doXMLPost(XMLReqRes.java:613)
at de.sema.diwi.ss.util.XMLReqRes.doHttpRequest(XMLReqRes.java:328)
at de.sema.diwi.ss.control.SS_RMIImpl.XMLPost(SS_RMIImpl.java:315)
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 sun.rmi.server.UnicastServerRef.dispatch(UnicastServerRef.java:294)
at sun.rmi.transport.Transport$1.run(Transport.java:153)
at java.security.AccessController.doPrivileged(Native Method)
at sun.rmi.transport.Transport.serviceCall(Transport.java:149)
at sun.rmi.transport.tcp.TCPTransport.handleMessages(TCPTransport.java:466)
at sun.rmi.transport.tcp.TCPTransport$ConnectionHandler.run(TCPTransport.java:707)
at java.lang.Thread.run(Thread.java:595)
doXMLPost: Null response from service.