Handle Options Templates gracefully

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
+from pynetflow.netflow.v9 import V9TemplateNotRecognized, V9OptionsTemplatesNotSupported
 
 
 IS_DEBUG = os.environ.get('DEBUG', 'false') in ['true', 'yes', '1']
@@ -154,8 +154,13 @@ def process_named_pipe(named_pipe_filename):
                         continue
                     except V9TemplateNotRecognized as ex:
                         log.warning(f"Failed to decode a v9 ExportPacket, template not recognized (if this happens at the start, it's ok)")
-                        log.debug(f"Problematic packet data: {data_b64}")
-                        log.debug(f"Known templates until now: {templates}")
+                        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: