Fixed: [snmpwalk doesn't show properly SNMP boolean values which equal false](https://github.com/clicon/clixon/issues/400)

apps/snmp/snmp_main.c

@@ -525,6 +525,7 @@ main(int    argc,
      * used by the client, even though new TCP sessions are created for
      * each message sent to the backend.
      */
+    clicon_data_set(h, "session-transport", "cl:snmp");
     if (clicon_hello_req(h, "cl:snmp", NULL, &id) < 0)
         goto done;
     clicon_session_id_set(h, id);