Finding out what version of netconfd-pro is running on a given system is quite simple with yangcli-pro.

If the yuma-system YANG module is loaded then the following information will be available. 

Set --with-yuma-system=true in the server configuration to enable this YANG module.

The object /system/sysNetconfServerId contains this information, and can be viewed by performing a 'xget' or 'sget' operation on this object.

For example:

user@localhost> xget /system/sysNetconfServerId

RPC Data Reply 2 for session 2 [default]:

rpc-reply {

  data {

    system {

      sysNetconfServerId 'netconfd-pro 16.10-6'