absolute path for configuration

mac_ip.py

@@ -19,6 +19,7 @@
 Creates the nat set.
 """
 
+import os
 import logging
 from configparser import ConfigParser
 
@@ -26,8 +27,10 @@ from re2oapi import Re2oAPIClient
 
 from firewall import NetfilterSet
 
+BASE_DIR = os.path.dirname(os.path.abspath(__file__))
+
 CONFIG = ConfigParser()
-CONFIG.read('/usr/local/firewall/config.ini')
+CONFIG.read(os.path.join(BASE_DIR, 'config.ini'))
 
 api_hostname = CONFIG.get('Re2o', 'hostname')
 api_password = CONFIG.get('Re2o', 'password')