AFter upgrade from 11.4.1 HF4 to 11.5.1 HF5 Getting RST after SSL connection setup, cert and keys are passed

Yes, I have opened a support case. Monitors seem to work fine. Local sniffer traces on my laptop show that the SSL handshake seems to complete just fine, both on client and server side, whether I force TLS 1.2, 1.1 or 1.0, but after the SSL handshake is complete, I am sent a tcp reset. Today, I will be using our enterprise sniffers to look at server side of the connection to make certain whether its is the Domino server sending the reset as I assume.... Logs on the LTM don't show any evidence of the monitor going down....