Add switch for server ID validation:

You should add this to [GLOBAL]:

VALIDATE_SERVER_IDS: True

Please set to True if you are part of FreeDMR network.
If you are standalone or private network, You can set it to False if you want.

config.py

@@ -147,7 +147,8 @@ def build_config(_config_file):
                     'ALLOW_NULL_PASSPHRASE': config.getboolean(section, 'ALLOW_NULL_PASSPHRASE'),
                     'ANNOUNCEMENT_LANGUAGES': config.get(section, 'ANNOUNCEMENT_LANGUAGES'),
                     'SERVER_ID': config.getint(section, 'SERVER_ID').to_bytes(4, 'big'),
-                    'DATA_GATEWAY': config.getboolean(section, 'DATA_GATEWAY')
+                    'DATA_GATEWAY': config.getboolean(section, 'DATA_GATEWAY'),
+                    'VALIDATE_SERVER_IDS': config.getboolean(section, 'VALIDATE_SERVER_IDS')
                     
                 })
                 if not CONFIG['GLOBAL']['ANNOUNCEMENT_LANGUAGES']:

hblink.py

@@ -450,6 +450,7 @@ class OPENBRIDGE(DatagramProtocol):
                         logger.warning('(%s) Packet more than 5s old!, discarding', self._system)
                         return
                     
+                    if self._CONFIG['GLOBAL']['VALIDATE_SERVER_IDS']:
                         #Discard bad source server 
                         if ((len(str(int.from_bytes(_source_server,'big'))) < 4) or (len(str(int.from_bytes(_source_server,'big'))) > 7)):
                             if _stream_id not in self._laststrid: