[ovs-discuss] Error communicating with sb database

[Sverker Abrahamsson]

Since an update of ovn/openvswitch the slave switches can't connect to 
the master database. In the ovsdb-server-sb.log I get messages like the 
below:

2017-11-13T09:59:35.080Z|00210|stream_ssl|WARN|SSL_accept: error:140760FC:SSL routines:SSL23_GET_CLIENT_HELLO:unknown protocol
2017-11-13T09:59:35.080Z|00211|stream_ssl|WARN|Dropped 2 log messages in last 8 seconds (most recently, 2 seconds ago) due to excessive rate
2017-11-13T09:59:35.080Z|00212|stream_ssl|WARN|ssl:148.251.126.50:46994: received JSON-RPC data on SSL channel
2017-11-13T09:59:35.080Z|00213|jsonrpc|WARN|Dropped 2 log messages in last 8 seconds (most recently, 2 seconds ago) due to excessive rate
2017-11-13T09:59:35.080Z|00214|jsonrpc|WARN|ssl:148.251.126.50:46994: receive error: Protocol error
2017-11-13T09:59:35.080Z|00215|reconnect|WARN|ssl:148.251.126.50:46994: connection dropped (Protocol error)
2017-11-13T09:59:40.974Z|00216|stream_ssl|WARN|SSL_accept: error:140760FC:SSL routines:SSL23_GET_CLIENT_HELLO:unknown protocol
2017-11-13T09:59:40.974Z|00217|reconnect|WARN|ssl:144.76.84.73:45864: connection dropped (Protocol error)
2017-11-13T09:59:43.088Z|00218|stream_ssl|WARN|SSL_accept: error:140760FC:SSL routines:SSL23_GET_CLIENT_HELLO:unknown protocol
2017-11-13T09:59:43.106Z|00219|reconnect|WARN|ssl:148.251.126.50:47006: connection dropped (Protocol error)

I do not have SSL enabled, did it become mandatory?

Best regards
Sverker