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tWebServiceInput connection timeout

I have created a very simple job that queries my product's web service (tWebServiceInput) and sends it log (tLogRow). I am using the WSDL2Java feature as my web service returns a complex type. I specify the WSDL using an IP address, e.g. http://192.168.111.x/services/whatever?wsdl.
I can run this job without issue when Talend and the web service run on the same subnet. However, when my web service is running on a separate subnet, Talend always reports a connection timeout on the web service call. It makes no difference on what I set the web service stub timeout to, the connection timeout always happens after roughly 20 secs.
To eliminate any potential network issues, I used soapUI (web service testing tool) to call my web service when it was running on a different subnet. It worked perfectly. There are no proxies in play.
It appears Talend has a subtle bug here.
I am using Open Studio 4.0.2.
The java exception throw is:
Exception in component tWebServiceInput_1
faultCode: {}Server.userException
faultString: Connection timed out: connect
{} Connection timed out: connect
at Method)
at Source)
at Source)
at Source)
at Source)
at Source)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
at java.lang.reflect.Method.invoke(Unknown Source)
at org.apache.axis.transport.http.HTTPSender.getSocket(
at org.apache.axis.transport.http.HTTPSender.writeToSocket(
at org.apache.axis.transport.http.HTTPSender.invoke(
at org.apache.axis.strategies.InvocationStrategy.visit(
at org.apache.axis.SimpleChain.doVisiting(
at org.apache.axis.SimpleChain.invoke(
at org.apache.axis.client.AxisClient.invoke(
at org.apache.axis.client.Call.invokeEngine(
at org.apache.axis.client.Call.invoke(
at org.apache.axis.client.Call.invoke(
at org.apache.axis.client.Call.invoke(
at org.apache.axis.client.Call.invoke(
at routines.ValogixDataExportSoap11BindingStub.itemStockingQuantityByLocation(
at v8_export.v8sq_0_1.V8SQ.tWebServiceInput_1Process(
at v8_export.v8sq_0_1.V8SQ.runJobInTOS(
at v8_export.v8sq_0_1.V8SQ.main(