diff --git a/utils/he_ipv6/tunnel.py b/utils/he_ipv6/tunnel.py
index 8f00154..2526ab8 100644
--- a/utils/he_ipv6/tunnel.py
+++ b/utils/he_ipv6/tunnel.py
@@ -1,4 +1,5 @@
 import ipaddress
+import logging
 import socket
 ##
 import netaddr
@@ -8,6 +9,10 @@ from . import ra
 from . import utils
 
 
+# TODO: more logging
+logger = logging.getLogger()
+
+
 class IP(object):
     type = None
     version = None
@@ -88,12 +93,15 @@ class Assignment(object):
         _iface_txt = self.xml.attrib['iface'].strip()
         self.iface = _iface_txt.strip()
         ipr = IPRoute()
+        logger.debug('Looking for iface {0}'.format(self.iface))
         self.iface_idx = ipr.link_lookup(ifname = self.iface)[0]
+        logger.debug('Found iface {0} at idx {1}'.format(self.iface, self.iface_idx))
         # Link-Local address
         ll = ipr.get_addr(index = self.iface_idx,
                           family = socket.AF_INET6,
                           scope = 253)[0]['attrs']
         addrs = dict(ll)['IFA_ADDRESS']
+        logger.debug('Link-Local address for {0}: {1}'.format(addrs))
         if isinstance(addrs, (list, tuple)):
             addr = addrs[0]
         else: