Using PIM-Sparse Mode for multicast traffic with BGP for unicast routing/reverse path filtering may prevent PIM neighbor routers from switching from the RPT to the SPT. ... Routers upstream and including BIG-IP will never receive PIM JOIN messages from the rendezvous point, which is required for traffic to switch from the RPT to the SPT. ... The sender's DR may continue to send traffic to the RP in register messages indefinitely. ... Workaround ... Remove the floating self IP address from the traffic group or select a routing protocol that does not use it, such as OSPF. ... Fix Information ... PIM can now send hello messages from a floating self IP address. ... Behavior Change ... PIM can now send hello messages using a floating self IP address. ... Configure it in imish under the interface along with the PIM mode: #imish imish> enable imish# configure terminal imish(config)# interface external imish(config-if)# ip pim use-floating-address Upon failover, the previously active unit w...