2016-11-14 17:24:27,980 ERROR [org.ovirt.engine.core.bll.exportimport.ImportVmCommand] (org.ovirt.thread.pool-8-thread-39) [4a0b828a] Exception: java.lang.reflect.UndeclaredThrowableException at com.sun.proxy.$Proxy183.isMacInRange(Unknown Source) at java.util.function.Predicate.lambda$negate$1(Predicate.java:80) [rt.jar:1.8.0_111] at java.util.stream.ReferencePipeline$2$1.accept(ReferencePipeline.java:174) [rt.jar:1.8.0_111] at java.util.stream.ReferencePipeline$2$1.accept(ReferencePipeline.java:175) [rt.jar:1.8.0_111] at java.util.stream.ReferencePipeline$3$1.accept(ReferencePipeline.java:193) [rt.jar:1.8.0_111] at java.util.ArrayList$ArrayListSpliterator.forEachRemaining(ArrayList. java:1374) [rt.jar:1.8.0_111] at java.util.stream.AbstractPipeline.copyInto(AbstractPipeline.java:481) [rt.jar:1.8.0_111] at java.util.stream.AbstractPipeline.wrapAndCopyInto( AbstractPipeline.java:471) [rt.jar:1.8.0_111] at java.util.stream.ReduceOps$ReduceOp.evaluateSequential(ReduceOps.java:708) [rt.jar:1.8.0_111] at java.util.stream.AbstractPipeline.evaluate(AbstractPipeline.java:234) [rt.jar:1.8.0_111] at java.util.stream.ReferencePipeline.collect(ReferencePipeline.java:499) [rt.jar:1.8.0_111] at org.ovirt.engine.core.bll.network.vm.ExternalVmMacsFinder. findExternalMacAddresses(ExternalVmMacsFinder.java:38) [bll.jar:] at org.ovirt.engine.core.bll.exportimport.ImportVmCommandBase. reportExternalMacs(ImportVmCommandBase.java:438) [bll.jar:] at org.ovirt.engine.core.bll.exportimport.ImportVmCommandBase. addVmInterfaces(ImportVmCommandBase.java:552) [bll.jar:] at org.ovirt.engine.core.bll.exportimport.ImportVmCommandBase.lambda$ addVmToDb$0(ImportVmCommandBase.java:458) [bll.jar:] at org.ovirt.engine.core.utils.transaction.TransactionSupport. executeInNewTransaction(TransactionSupport.java:204) [utils.jar:] at org.ovirt.engine.core.bll.exportimport.ImportVmCommandBase.addVmToDb( ImportVmCommandBase.java:454) [bll.jar:] at org.ovirt.engine.core.bll.exportimport.ImportVmCommandBase.executeCommand( ImportVmCommandBase.java:425) [bll.jar:] at org.ovirt.engine.core.bll.CommandBase.executeWithoutTransaction( CommandBase.java:1305) [bll.jar:] at org.ovirt.engine.core.bll.CommandBase.executeActionInTransactionScop e(CommandBase.java:1447) [bll.jar:] at org.ovirt.engine.core.bll.CommandBase.runInTransaction( CommandBase.java:2075) [bll.jar:] at org.ovirt.engine.core.utils.transaction.TransactionSupport. executeInSuppressed(TransactionSupport.java:166) [utils.jar:] at org.ovirt.engine.core.utils.transaction.TransactionSupport.executeInScope( TransactionSupport.java:105) [utils.jar:] at org.ovirt.engine.core.bll.CommandBase.execute(CommandBase.java:1490) [bll.jar:] at org.ovirt.engine.core.bll.CommandBase.executeAction(CommandBase.java:398) [bll.jar:] at org.ovirt.engine.core.bll.PrevalidatingMultipleActionsRu nner.executeValidatedCommand(PrevalidatingMultipleActionsRunner.java:204) [bll.jar:] at org.ovirt.engine.core.bll.PrevalidatingMultipleActionsRunner.runCommands( PrevalidatingMultipleActionsRunner.java:176) [bll.jar:] at org.ovirt.engine.core.bll.PrevalidatingMultipleActionsRu nner.lambda$invokeCommands$3(PrevalidatingMultipleActionsRunner.java:182) [bll.jar:] at org.ovirt.engine.core.utils.threadpool.ThreadPoolUtil$ InternalWrapperRunnable.run(ThreadPoolUtil.java:92) [utils.jar:] at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) [rt.jar:1.8.0_111] at java.util.concurrent.FutureTask.run(FutureTask.java:266) [rt.jar:1.8.0_111] at java.util.concurrent.ThreadPoolExecutor.runWorker( ThreadPoolExecutor.java:1142) [rt.jar:1.8.0_111] at java.util.concurrent.ThreadPoolExecutor$Worker.run( ThreadPoolExecutor.java:617) [rt.jar:1.8.0_111] at java.lang.Thread.run(Thread.java:745) [rt.jar:1.8.0_111] Caused by: java.lang.reflect.InvocationTargetException at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) [rt.jar:1.8.0_111] at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java: 62) [rt.jar:1.8.0_111] at sun.reflect.DelegatingMethodAccessorImpl.invoke( DelegatingMethodAccessorImpl.java:43) [rt.jar:1.8.0_111] at java.lang.reflect.Method.invoke(Method.java:498) [rt.jar:1.8.0_111] at org.ovirt.engine.core.utils.lock.LockedObjectFactory$ LockingInvocationHandler.invoke(LockedObjectFactory.java:59) [utils.jar:] ... 34 more Caused by: java.lang.NumberFormatException: For input string: "" at java.lang.NumberFormatException.forInputString( NumberFormatException.java:65) [rt.jar:1.8.0_111] at java.lang.Long.parseLong(Long.java:601) [rt.jar:1.8.0_111] at org.ovirt.engine.core.utils.MacAddressRangeUtils.macToLong( MacAddressRangeUtils.java:123) [utils.jar:] at org.ovirt.engine.core.bll.network.macpool.MacPoolUsingRanges.isMacInRange( MacPoolUsingRanges.java:116) [bll.jar:] at org.ovirt.engine.core.bll.network.macpool.DelegatingMacPoolDecorator. isMacInRange(DelegatingMacPoolDecorator.java:56) [bll.jar:] ... 39 more Any idea? 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