Upgrade pynetflow (support V9 Options Templates)

Author: grafolean

netflowwriter.py

@@ -27,7 +27,7 @@
 sys.path.append(os.path.dirname(os.path.realpath(__file__)) + '/pynetflow')
 from pynetflow.netflow import parse_packet
 from pynetflow.netflow.utils import UnknownExportVersion
-from pynetflow.netflow.v9 import V9TemplateNotRecognized, V9OptionsTemplatesNotSupported
+from pynetflow.netflow.v9 import V9TemplateNotRecognized
 
 
 IS_DEBUG = os.environ.get('DEBUG', 'false') in ['true', 'yes', '1']
@@ -157,11 +157,6 @@ def process_named_pipe(named_pipe_filename):
                         if client_ip in last_record_seqs:
                             last_record_seqs[client_ip] += 1
                         continue
-                    except V9OptionsTemplatesNotSupported as ex:
-                        log.debug(f"Skipping Options Data Record (Options Template parsing not supported)")
-                        if client_ip in last_record_seqs:
-                            last_record_seqs[client_ip] += 1
-                        continue
 
                 except Exception as ex:
                     log.exception("Error writing line, skipping...")