diff --git a/utils/he_ipv6/tunnel.py b/utils/he_ipv6/tunnel.py
index 43a0828..8237f05 100644
--- a/utils/he_ipv6/tunnel.py
+++ b/utils/he_ipv6/tunnel.py
@@ -135,7 +135,9 @@ class Assignment(object):
             logger.debug('Base prefix for {0}: {1}'.format(str(i), _base))
             start = '{0}:dead:beef:cafe:0'.format(_base)
             stop = '{0}:dead:beef:cafe:ffff'.format(_base)
-            self.dhcp6_ranges.append((start, stop))
+            range = (start, stop)
+            self.dhcp6_ranges.append(range)
+            logger.debug('Added range {0} to block {1} for iface {2}'.format(range, str(i.ip), self.iface))
         return(None)