diff --git a/utils/he_ipv6/ra.py b/utils/he_ipv6/ra.py
index b139d0e..2b5591e 100644
--- a/utils/he_ipv6/ra.py
+++ b/utils/he_ipv6/ra.py
@@ -16,23 +16,16 @@ class RA(object):
 
 
 class RAConf(object):
-    def_tpl_name = None
-    def_conf = None
     cfgstr = None
-    def_tpl_dir = os.path.join(os.path.dirname(os.path.abspath(os.path.expanduser(__file__))), 'tpl')
+    tpl_dir = os.path.join(os.path.dirname(os.path.abspath(os.path.expanduser(__file__))), 'tpl')
 
     def __init__(self, conf = None, tpl_name = None, tpl_dir = None, *args, **kwargs):
         for k in ('name', 'dir'):
             n = 'tpl_{0}'.format(k)
-            d = 'def_tpl_{0}'.format(k)
             v = locals()[n]
-            if not v:
-                setattr(self, n, getattr(self, d))
-            else:
+            if v:
                 setattr(self, n, v)
-        if not conf:
-            self.conf = self.def_conf
-        else:
+        if conf:
             self.conf = os.path.abspath(os.path.expanduser(conf))
 
     def ext_init(self):
@@ -140,8 +133,8 @@ class RASvc(object):
 
 class RADVD(RA):
     name = 'radvd'
-    def_conf = '/etc/radvd.conf'
-    def_tpl_name = 'radvd.conf.j2'
+    conf = '/etc/radvd.conf'
+    tpl_name = 'radvd.conf.j2'
 
     def __init__(self, conf = None, tpl_name = None, tpl_dir = None):
         super().__init__(conf = conf, tpl_name = tpl_name, tpl_dir = tpl_dir)
@@ -150,8 +143,8 @@ class RADVD(RA):
 
 class DNSMasq(RA):
     name = 'dnsmasq'
-    def_conf = '/etc/dnsmasq.d/ra.conf'
-    def_tpl_name = 'dnsmasq.include.j2'
+    conf = '/etc/dnsmasq.d/ra.conf'
+    tpl_name = 'dnsmasq.include.j2'
 
     def __init__(self, conf = None, tpl_name = None, tpl_dir = None):
         super().__init__(conf = conf, tpl_name = tpl_name, tpl_dir = tpl_dir)