JBoss WebServices 1.2.1.GA_CP05, included with EAP 4.2 CP07 and EAP 4.3 CP06, does not handle IPv6 addresses correctly and fails to pass tests in the AS testsuite.
The tests which fail are:
org.jboss.test.webservice.admindevel.ExampleTestCase(tests-webservice).testHelloString
org.jboss.test.webservice.admindevel.ExampleTestCase(tests-webservice).testHelloBean
org.jboss.test.webservice.admindevel.ExampleTestCase(tests-webservice).testHelloArray
org.jboss.test.webservice.admindevel.ExplodedExampleTestCase(tests-webservice).testHelloString
org.jboss.test.webservice.admindevel.RedeployExampleTestCase(tests-webservice).testHelloString
org.jboss.test.webservice.admindevel.RedeployExampleTestCase(tests-webservice).testHelloBean
org.jboss.test.webservice.admindevel.RedeployExampleTestCase(tests-webservice).testHelloArray
org.jboss.test.webservice.jbws309.JBWS309TestCase(JACC+SecurityMgr).testRoleSecuredSLSB
org.jboss.test.webservice.jbws309.JBWS309TestCase(JACC+SecurityMgr).testBasicSecuredSLSB
org.jboss.test.webservice.jbws309.JBWS309TestCase(JACC+SecurityMgr).testBasicSecuredServiceAccess
org.jboss.test.webservice.jbws309.JBWS309TestCase(JACC+SecurityMgr).testBasicSecuredDIIAccess
org.jboss.test.webservice.jbws309.JBWS309TestCase(JACC+SecurityMgr).testRoleSecuredServiceAccess
org.jboss.test.webservice.jbws309.JBWS309TestCase(JACC).testRoleSecuredSLSB
org.jboss.test.webservice.jbws309.JBWS309TestCase(JACC).testBasicSecuredSLSB
org.jboss.test.webservice.jbws309.JBWS309TestCase(JACC).testBasicSecuredServiceAccess
org.jboss.test.webservice.jbws309.JBWS309TestCase(JACC).testBasicSecuredDIIAccess
org.jboss.test.webservice.jbws309.JBWS309TestCase(JACC).testRoleSecuredServiceAccess

All of these tests initially exbibited the following exception:

Error Message: RoleSecuredSLSB not bound

or similar. In the logs, I would see:

02:27:11,331 INFO [EjbModule] Deploying RoleSecuredSLSB
02:27:11,342 INFO [EjbModule] Deploying BasicSecuredSLSB
02:27:11,386 INFO [ProxyFactory] Bound EJB Home 'RoleSecuredSLSB' to jndi 'ejb/RoleSecuredSLSB'
02:27:11,393 INFO [ProxyFactory] Bound EJB Home 'BasicSecuredSLSB' to jndi 'ejb/BasicSecuredSLSB'
02:27:11,395 INFO [EJBDeployer] Deployed: file:/qa/services/hudson/hudson_workspace/workspace/eap-as-4.3.x-testsuite-ipv6/JBPAPP_4_3_0_GA_CP/testsuite/output/lib/ws4ee-jbws309.jar
02:27:11,729 INFO [DefaultEndpointRegistry] register: jboss.ws:context=ws4ee-jbws309,endpoint=RoleSecuredSLSB
02:27:11,732 INFO [DefaultEndpointRegistry] register: jboss.ws:context=ws4ee-jbws309,endpoint=BasicSecuredSLSB
02:27:15,209 ERROR [MainDeployer] Could not start deployment: file:/qa/services/hudson/hudson_workspace/workspace/eap-as-4.3.x-testsuite-ipv6/JBPAPP_4_3_0_GA_CP/testsuite/output/lib/ws4ee-jbws309.jar
org.jboss.ws.WSException: Malformed URL: http://fec0:0:a16:ffff::d:8080/ws4ee-jbws309/RoleSecured
at org.jboss.ws.metadata.builder.MetaDataBuilder.getServiceEndpointAddress(MetaDataBuilder.java:255)
at org.jboss.ws.metadata.builder.MetaDataBuilder.initEndpointAddress(MetaDataBuilder.java:175)
at org.jboss.ws.metadata.builder.jaxrpc.JAXRPCServerMetaDataBuilder.buildMetaData(JAXRPCServerMetaDataBuilder.java:147)
at org.jboss.wsf.stack.jbws.UnifiedMetaDataDeploymentAspect.create(UnifiedMetaDataDeploymentAspect.java:61)
at org.jboss.wsf.framework.deployment.DeploymentAspectManagerImpl.deploy(DeploymentAspectManagerImpl.java:115)
at org.jboss.wsf.container.jboss42.ArchiveDeployerHook.deploy(ArchiveDeployerHook.java:98)
at org.jboss.wsf.container.jboss42.DeployerInterceptor.start(DeployerInterceptor.java:90)
at org.jboss.deployment.SubDeployerInterceptorSupport$XMBeanInterceptor.start(SubDeployerInterceptorSupport.java:188)
at org.jboss.deployment.SubDeployerInterceptor.invoke(SubDeployerInterceptor.java:95)
at org.jboss.mx.server.Invocation.invoke(Invocation.java:88)
at org.jboss.mx.server.AbstractMBeanInvoker.invoke(AbstractMBeanInvoker.java:264)
at org.jboss.mx.server.MBeanServerImpl.invoke(MBeanServerImpl.java:659)
at org.jboss.mx.util.MBeanProxyExt.invoke(MBeanProxyExt.java:210)
at $Proxy30.start(Unknown Source)
at org.jboss.deployment.MainDeployer.start(MainDeployer.java:1025)
at org.jboss.deployment.MainDeployer.deploy(MainDeployer.java:819)

There were two key problems which were encountered when looking in detail at the testsuite failures.

1. The service ws4ee-admindevel.jar was not able to deploy correctly. Fixed by
changing testsuite/imports/sections/webservices.xml to use ${node0.url} instead of ${node0} as a substitution for jbosstest.server.host
(ii) modifying org.jboss.ws.metadata.builder.MetaDataBuilder.getServiceEndpointAddress() which was building the endpoint URL incorrectly

Later, once the deployements were working, a different set of failures were occurring on the client side. Clients were unable to connect to the server side WebService.

2009-11-20 15:52:14,751 DEBUG [org.jboss.test.JBossTestCase$1] deployed package: ws4ee-admindevel-client.jar
2009-11-20 15:52:14,753 DEBUG [org.jboss.test.webservice.admindevel.ExampleTestCase] jndiEnv:

{jnp.parsedName=, j2ee.clientName=ws4ee-client, java.naming.factory.initial=org.jnp.interfaces.NamingContextFactory, java.naming.provider.url=[3ffe:ffff:100:f101::1]:1099, java.naming.factory.url.pkgs=org.jboss.naming.client}

2009-11-20 15:52:14,886 DEBUG [org.jboss.ws.core.jaxrpc.client.ServiceObjectFactory] Create jaxrpc service from wsdl
2009-11-20 15:52:15,144 DEBUG [org.jboss.ws.metadata.builder.jaxrpc.JAXRPCClientMetaDataBuilder] START buildMetaData: [service=null]
2009-11-20 15:52:15,243 DEBUG [org.jboss.ws.tools.wsdl.WSDLDefinitionsFactory] parse: http://[3ffe:ffff:100:f101::1]:8080/admindevel?wsdl
2009-11-20 15:52:15,658 DEBUG [org.jboss.ws.tools.JavaToXSD] Load schema: http://org.jboss.webservice/example/types=file:/tmp/JBossWS_org.jboss.webservice_example_types36467.xsd
2009-11-20 15:52:15,658 DEBUG [org.jboss.ws.core.utils.JBossWSEntityResolver] resolveEntity: [pub=null,sysid=file:/tmp/JBossWS_org.jboss.webservice_example_types36467.xsd]
2009-11-20 15:52:15,706 DEBUG [org.jboss.ws.core.utils.JBossWSEntityResolver] resolveEntity: [pub=http://schemas.xmlsoap.org/soap/encoding/,sysid=null]
2009-11-20 15:52:15,937 DEBUG [org.jboss.ws.metadata.umdm.UnifiedMetaData] Eagerly initialize the meta data model
2009-11-20 15:52:15,967 DEBUG [org.jboss.ws.metadata.umdm.OperationMetaData] Found best matching java method: public abstract org.jboss.test.webservice.admindevel.HelloObj[] org.jboss.test.webservice.admindevel.Hello.helloArray(org.jboss.test.webservice.admindevel.HelloObj[]) throws java.rmi.RemoteException
2009-11-20 15:52:15,967 DEBUG [org.jboss.ws.metadata.umdm.OperationMetaData] Found best matching java method: public abstract org.jboss.test.webservice.admindevel.HelloObj org.jboss.test.webservice.admindevel.Hello.helloBean(org.jboss.test.webservice.admindevel.HelloObj) throws java.rmi.RemoteException
2009-11-20 15:52:15,967 DEBUG [org.jboss.ws.metadata.umdm.OperationMetaData] Found best matching java method: public abstract java.lang.String org.jboss.test.webservice.admindevel.Hello.helloString(java.lang.String) throws java.rmi.RemoteException
2009-11-20 15:52:16,379 DEBUG [org.jboss.ws.metadata.builder.jaxrpc.JAXRPCClientMetaDataBuilder] END buildMetaData:
UnifiedMetaData:
implementation: jbossws-1.2.1.GA_CP05 (build=200911201531)
deploymentName: null
securityDomain: null

ServiceMetaData:
qname=

{http://org.jboss.webservice/example}

HelloService
refName=null
wsdName=null
wsdlFile=null
wsdlLocation=http://[3ffe:ffff:100:f101::1]:8080/admindevel?wsdl
jaxrpcMapping=jar:file:/tmp/betty/JBPAPP_4_2_0_GA_CP_IPV6/testsuite/output/lib/ws4ee-admindevel-client.jar!/META-INF/jaxrpc-mapping.xml
publishLocation=null
securityConfig=null
properties=null

TypesMetaData:
[complexType=

{http://org.jboss.webservice/example/types}

HelloObj,javaType=org.jboss.test.webservice.admindevel.HelloObj]
[complexType=

{http://org.jboss.webservice/example/types}

HelloObj.Array,javaType=org.jboss.test.webservice.admindevel.HelloObj[]]
<schema targetNamespace='http://org.jboss.webservice/example/types' xmlns='http://www.w3.org/2001/XMLSchema' xmlns:soap11-enc='http://schemas.xmlsoap.org/soap/encoding/' xmlns:tns='http://org.jboss.webservice/example/types' xmlns:xsi='http://www.w3.org/2001/XMLSchema-instance'>
<complexType name='HelloObj'>
<sequence>
<element name='msg' nillable='true' type='string'/>
</sequence>
</complexType>
<complexType name='HelloObj.Array'>
<sequence>
<element maxOccurs='unbounded' minOccurs='0' name='value' nillable='true' type='tns:HelloObj'/>
</sequence>
</complexType>
</schema>

ClientEndpointMetaData:
type=JAXRPC
qname=

{http://org.jboss.webservice/example}

HelloPort
address=http://3ffe:ffff:100:f101::1:8080/admindevel
binding=http://schemas.xmlsoap.org/wsdl/soap/http
seiName=org.jboss.test.webservice.admindevel.Hello
configFile=META-INF/standard-jaxrpc-client-config.xml
configName=Standard Client
authMethod=null
properties={}

OperationMetaData:
qname=

{http://org.jboss.webservice/example}

helloArray
javaName=helloArray
style=rpc/literal
oneWay=false
soapAction=
ParameterMetaData:
xmlName=arrayOfHelloObj_1
partName=arrayOfHelloObj_1
xmlType=

{http://org.jboss.webservice/example/types}

HelloObj.Array
javaType=org.jboss.test.webservice.admindevel.HelloObj[]
mode=IN
inHeader=false
index=0
ReturnMetaData:
xmlName=result
partName=result
xmlType=

{http://org.jboss.webservice/example/types}

HelloObj.Array
javaType=org.jboss.test.webservice.admindevel.HelloObj[]
mode=OUT
inHeader=false
index=-1

OperationMetaData:
qname=

{http://org.jboss.webservice/example}

helloBean
javaName=helloBean
style=rpc/literal
oneWay=false
soapAction=
ParameterMetaData:
xmlName=HelloObj_1
partName=HelloObj_1
xmlType=

{http://org.jboss.webservice/example/types}

HelloObj
javaType=org.jboss.test.webservice.admindevel.HelloObj
mode=IN
inHeader=false
index=0
ReturnMetaData:
xmlName=result
partName=result
xmlType=

{http://org.jboss.webservice/example/types}

HelloObj
javaType=org.jboss.test.webservice.admindevel.HelloObj
mode=OUT
inHeader=false
index=-1

OperationMetaData:
qname=

{http://org.jboss.webservice/example}

helloString
javaName=helloString
style=rpc/literal
oneWay=false
soapAction=
ParameterMetaData:
xmlName=String_1
partName=String_1
xmlType=

{http://www.w3.org/2001/XMLSchema}

string
javaType=java.lang.String
mode=IN
inHeader=false
index=0
ReturnMetaData:
xmlName=result
partName=result
xmlType=

{http://www.w3.org/2001/XMLSchema}

string
javaType=java.lang.String
mode=OUT
inHeader=false
index=-1
2009-11-20 15:52:16,388 DEBUG [org.jboss.ws.core.jaxrpc.client.ServiceProxy] Invoke on jaxrpc service: getPort
2009-11-20 15:52:16,459 DEBUG [org.jboss.ws.metadata.umdm.EndpointMetaData] Create new config [name=Standard Client,file=META-INF/standard-jaxrpc-client-config.xml]
2009-11-20 15:52:16,465 DEBUG [org.jboss.ws.metadata.config.JBossWSConfigFactory] getConfig: [name=Standard Client,url=META-INF/standard-jaxrpc-client-config.xml]
2009-11-20 15:52:16,467 DEBUG [org.jboss.ws.metadata.config.JBossWSConfigFactory] parse: jar:file:/tmp/betty/JBPAPP_4_2_0_GA_CP_IPV6/build/output/jboss-4.2.0.GA_CP07/client/jbossws-client.jar!/META-INF/standard-jaxrpc-client-config.xml
2009-11-20 15:52:16,782 DEBUG [org.jboss.ws.metadata.umdm.EndpointMetaData] Configure EndpointMetaData
2009-11-20 15:52:16,782 DEBUG [org.jboss.ws.metadata.umdm.EndpointMetaData] Added 0 PRE handlers
2009-11-20 15:52:16,782 DEBUG [org.jboss.ws.metadata.umdm.EndpointMetaData] Added 0 ENDPOINT handlers
2009-11-20 15:52:16,782 DEBUG [org.jboss.ws.metadata.umdm.EndpointMetaData] Added 0 POST handlers
2009-11-20 15:52:16,782 DEBUG [org.jboss.ws.metadata.umdm.EndpointMetaData] Configure SOAPBinding
2009-11-20 15:52:16,798 DEBUG [org.jboss.ws.core.soap.MessageContextAssociation] pushMessageContext: org.jboss.ws.core.jaxrpc.handler.SOAPMessageContextJAXRPC@13b5a3a (Thread main)
2009-11-20 15:52:16,808 DEBUG [org.jboss.ws.core.EndpointInvocation] setRequestParamValue: [name=String_1,value=java.lang.String]
2009-11-20 15:52:16,809 DEBUG [org.jboss.ws.core.jaxrpc.SOAP11BindingJAXRPC] bindRequestMessage:

{http://org.jboss.webservice/example}

helloString
2009-11-20 15:52:16,841 DEBUG [org.jboss.ws.core.jaxrpc.SOAP11BindingJAXRPC] Create RPC body element:

{http://org.jboss.webservice/example}

helloString
2009-11-20 15:52:16,843 DEBUG [org.jboss.ws.core.EndpointInvocation] getRequestParamValue: String_1
2009-11-20 15:52:16,843 DEBUG [org.jboss.ws.core.EndpointInvocation] transformPayloadValue: java.lang.String -> java.lang.String
2009-11-20 15:52:16,868 DEBUG [org.jboss.ws.core.client.RemotingConnectionImpl] Get locator for: [addr=http://3ffe:ffff:100:f101::1:8080/admindevel,props=

{javax.xml.rpc.service.endpoint.address=http://3ffe:ffff:100:f101::1:8080/admindevel}

]
2009-11-20 15:52:16,911 DEBUG [org.jboss.remoting.Client] Client[17645325:5c4o02s-5tdv7z-g29fg5rh-1-g29fg80f-3].connect(null)
2009-11-20 15:52:16,939 DEBUG [org.jboss.remoting.AbstractInvoker] locator: InvokerLocator http://192.168.0.100/admindevel?datatype=JBossWSMessage
2009-11-20 15:52:16,940 DEBUG [org.jboss.remoting.AbstractInvoker] configuration:

{enableLease=false}

2009-11-20 15:52:16,949 DEBUG [org.jboss.remoting.MicroRemoteClientInvoker] org.jboss.remoting.transport.http.HTTPClientInvoker@848ecc connecting
2009-11-20 15:52:16,949 DEBUG [org.jboss.remoting.MicroRemoteClientInvoker] org.jboss.remoting.transport.http.HTTPClientInvoker@848ecc connected
2009-11-20 15:52:16,951 DEBUG [org.jboss.remoting.Client] Client[17645325:5c4o02s-5tdv7z-g29fg5rh-1-g29fg80f-3] connected to InvokerLocator http://192.168.0.100/admindevel?datatype=JBossWSMessage
2009-11-20 15:52:16,951 DEBUG [org.jboss.ws.core.client.RemotingConnectionImpl] Remoting metadata: {HEADER=

{SOAPAction="", Content-Type=text/xml; charset=UTF-8}

, NoThrowOnError=true}
2009-11-20 15:52:16,954 DEBUG [org.jboss.remoting.transport.http.HTTPClientInvoker] Setting request header with SOAPAction : ""
2009-11-20 15:52:16,955 DEBUG [org.jboss.remoting.transport.http.HTTPClientInvoker] Setting request header with Content-Type : text/xml; charset=UTF-8
2009-11-20 15:52:16,967 DEBUG [org.jboss.remoting.transport.http.HTTPClientInvoker] Unable to retrieve response message
java.net.ConnectException: Connection refused
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.Socket.connect(Socket.java:520)
at sun.net.NetworkClient.doConnect(NetworkClient.java:152)
at sun.net.www.http.HttpClient.openServer(HttpClient.java:388)
at sun.net.www.http.HttpClient.openServer(HttpClient.java:523)
at sun.net.www.http.HttpClient.<init>(HttpClient.java:231)
at sun.net.www.http.HttpClient.New(HttpClient.java:304)
at sun.net.www.http.HttpClient.New(HttpClient.java:321)
at sun.net.www.protocol.http.HttpURLConnection.getNewHttpClient(HttpURLConnection.java:813)
at sun.net.www.protocol.http.HttpURLConnection.plainConnect(HttpURLConnection.java:765)
at sun.net.www.protocol.http.HttpURLConnection.connect(HttpURLConnection.java:690)
at sun.net.www.protocol.http.HttpURLConnection.getInputStream(HttpURLConnection.java:934)
at java.net.HttpURLConnection.getResponseCode(HttpURLConnection.java:367)
at java.net.HttpURLConnection.getResponseMessage(HttpURLConnection.java:433)
at org.jboss.remoting.transport.http.HTTPClientInvoker.useHttpURLConnection(HTTPClientInvoker.java:372)
at org.jboss.remoting.transport.http.HTTPClientInvoker.transport(HTTPClientInvoker.java:149)
at org.jboss.remoting.MicroRemoteClientInvoker.invoke(MicroRemoteClientInvoker.java:141)
at org.jboss.remoting.Client.invoke(Client.java:1925)
at org.jboss.remoting.Client.invoke(Client.java:786)
at org.jboss.ws.core.client.RemotingConnectionImpl.invoke(RemotingConnectionImpl.java:171)
at org.jboss.ws.core.client.SOAPRemotingConnection.invoke(SOAPRemotingConnection.java:77)
at org.jboss.ws.core.CommonClient.invoke(CommonClient.java:331)
at org.jboss.ws.core.jaxrpc.client.CallImpl.invokeInternal(CallImpl.java:517)
at org.jboss.ws.core.jaxrpc.client.CallImpl.invoke(CallImpl.java:277)
at org.jboss.ws.core.jaxrpc.client.PortProxy.invoke(PortProxy.java:151)
at $Proxy3.helloString(Unknown Source)
at org.jboss.test.webservice.admindevel.ExampleTestCase.testHelloString(ExampleTestCase.java:64)

After some investigation, I found that clients requesting a WSDL from a given service would be passed a WSDL with an incorrectly formatted soap:address locator, even though the address locator in the jar was correct. Fixed by:
modifying ServiceEndpointManager.getDisplayHost(), which was generating the display host URL incorrectly

With these fixes, the admindevel tests in the testsuite passed. However, when fixing the problems, it's clear that a more thorough investigation of the potential problems which may arise when using IPv6 addresses is in order, as they can appear in a variety of places in webservices XML descriptors.