ARP/MAC Tables Not Updating on Core Switches After F5 LTM Failover (GARP Issue?)

Thank you all for the responses. I do have a TAC case open and we are going to do some investigation on why the Nexus 7Ks are dropping the GARP traffic. We are going to be coordinating another maintenance window to perform an ELAM capture to determine what is transpiring on the 7K side but regardless of what we find, it does indeed look like MAC Masquerading may be the way to go regardless as it would also have the added benefit of improving failover speed.

I will respond again once I know more from Cisco TAC as to what the cause of the dropped GARP traffic is for those that may be curious.