Fix: unknown protocol should not throw a KeyError exception (in another place)

Author: grafolean

netflowbot.py

@@ -445,7 +445,8 @@ def get_top_N_protocols_for_entity_interfaces(interval_label, last_used_ts, max_
 
                 output_path_interface = NetFlowBot.construct_output_path_prefix(interval_label, direction, entity_id, interface=interface_index)
                 for protocol, traffic_bytes in c2.fetchall():
-                    output_path = f"{output_path_interface}.topprotocol.{path_part_encode(PROTOCOLS[protocol])}"
+                    protocol_label = PROTOCOLS[protocol] if protocol in PROTOCOLS else f"proto{protocol}"
+                    output_path = f"{output_path_interface}.topprotocol.{path_part_encode(protocol_label)}"
                     values.append({
                         'p': output_path,
                         'v': traffic_bytes / time_between,  # Bps