diff --git a/docs/project.rst b/docs/project.rst
index 036c44d..0a96e03 100644
--- a/docs/project.rst
+++ b/docs/project.rst
@@ -27,6 +27,14 @@ Translations are done on Transifex - please collaborate there to avoid double wo
 
 https://www.transifex.com/projects/p/nsupdateinfo/
 
+You need the transifex-client package so you have the tx command:
+
+::
+
+    # currently only works on python 2.x, transifex-client github repo has 3.3 support
+    pip install transifex-client
+
+
 Please make sure to configure your notification settings so that you are
 notified when the translation project is updated (so you can react quickly and
 keep your translation fresh).
diff --git a/nsupdate/api/views.py b/nsupdate/api/views.py
index 07aef32..484b393 100644
--- a/nsupdate/api/views.py
+++ b/nsupdate/api/views.py
@@ -405,7 +405,7 @@ def _on_update_success(host, fqdn, kind, ipaddr, secure, logger):
                 network = IPNetwork("%s/%d" % (ipaddr, netmask))
                 rh_ipaddr = str(IPAddress(network.network) + int(ifid))
                 rh_fqdn = FQDN(rh.name + '.' + fqdn.host, fqdn.domain)
-            except AddrFormatError as e:
+            except (IndexError, AddrFormatError) as e:
                 logger.warning("trouble computing address of related host %s [%s]" % (rh, e))
             else:
                 logger.info("updating related host %s -> %s" % (rh_fqdn, rh_ipaddr))
diff --git a/requirements.d/dev.txt b/requirements.d/dev.txt
index fac85d7..30e958c 100644
--- a/requirements.d/dev.txt
+++ b/requirements.d/dev.txt
@@ -5,4 +5,3 @@ pytest
 pytest-django
 pytest-pep8
 Sphinx
-transifex-client