VIAVI TestCenter: GUI hangs while leaving IGMP group.

Test Sequence of test. p2/3 join1                 leave1                              join3 p2/4      join22  leave2           join1           leave1      join3 When the test is started the below thing are observed: 1) IGMP leave command hangs (command sequencer) and doesn't send leave 2) Spirent TestCenter GUI hangs as well A. Send leave from device block hangs GUI...seems similar to IGMP leave command (command sequencer) hanging B. When switching from IPTV test to IGMP test, GUI hangs too Both A and B require killing of GUI Steps to reproduce. 1. load the .xml file on GUI and bring ports online 2. Start PPPoE devices on ports x/x and x/x and wait for devices to be connected. 3. Start the streamblocs on port x/x 4. Start command sequencer 5. The command sequencer stuck at IGMP/MLD leave group command for long time. 6. Send leave from device block blocks hangs. 7. Need to restart GUI

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