After upgrading to Splunk 6.6.0, why am I receiving warning messages such as "WARN SSLCommon - Received fatal SSL3 alert"?

[a212830]

Hi,

I upgraded a Search Head to 6.6.0, and am getting the following messages continuously...

5-10-2017 13:12:10.558 -0400 WARN  SSLCommon - Received fatal SSL3 alert. ssl_state='SSLv3 read client hello C', alert_description='handshake failure'.
05-10-2017 13:12:10.558 -0400 WARN  HttpListener - Socket error from 127.0.0.1 while idling: error:1408A10B:SSL routines:ssl3_get_client_hello:wrong version number
05-10-2017 13:12:13.181 -0400 WARN  SSLCommon - Received fatal SSL3 alert. ssl_state='SSLv3 read client hello C', alert_description='handshake failure'.
05-10-2017 13:12:13.181 -0400 WARN  HttpListener - Socket error from 127.0.0.1 while idling: error:1408A10B:SSL routines:ssl3_get_client_hello:wrong version number
05-10-2017 13:12:15.624 -0400 WARN  SSLCommon - Received fatal SSL3 alert. ssl_state='SSLv3 read client hello C', alert_description='handshake failure'.
05-10-2017 13:12:15.624 -0400 WARN  HttpListener - Socket error from 127.0.0.1 while idling: error:1408A10B:SSL routines:ssl3_get_client_hello:wrong version number