and this too

utils/he_ipv6/tunnel.py

@@ -151,6 +151,7 @@ class Tunnel(object):
         self.client = None
         self.server = None
         self.endpoint = None
+        self.ra = None
         self.ra_provider = None
         self.allocations = {}  # This is a dict of {}[alloc.id] = Allocation obj (as provided by HE)
         self.assignments = []  # This is a list of Assignment objs

utils/he_ipv6/tunnelbroker.py

@@ -168,9 +168,9 @@ class TunnelBroker(object):
                     ipr.close()
                     raise e
         ipr.close()
-        if self.tun.ra_provider:
-            self.tun.radvd.conf.write()
-            self.tun.radvd.svc.restart()
+        if self.tun.ra:
+            self.tun.ra.conf.write()
+            self.tun.ra.svc.restart()
         return(None)
 
     def stop(self):