slapformat: WIP: Improve link-local None code

slapos/format.py

@@ -433,17 +433,14 @@ class Tap(object):
       self.ipv4_address = interface.getTapIPv4Range(index)
     # Tap IPv6: host-to-tap gateway and tap-to-host address
     ipv6_gateway = options['ipv6_gateway']
-    link_local = None # link-local address resolved later
     if ipv6_gateway:
       self.ipv6_gateway = ipaddress.IPv4Interface(ipv6_gateway)
       ipv6_address = options['ipv6_address']
       if ipv6_address:
         self.ipv6_address = ipaddress.IPv6Interface(ipv6_address)
-      else:
-        self.ipv6_address = link_local
     elif conf.tap_ipv6:
       self.ipv6_gateway = interface.getTapIPv6Range(index)
-      self.ipv6_address = link_local
+    # If needed, ipv6_address will be set to link-local in format
 
   def format(self, interface, user):
     tap = self.name