diff --git a/o/OpenMPI/OpenMPI-1.10.7-GCC-6.3.0-2.27-uv.eb b/o/OpenMPI/OpenMPI-1.10.7-GCC-6.3.0-2.27-uv.eb
index 54a0b0c3..cb947e8a 100644
--- a/o/OpenMPI/OpenMPI-1.10.7-GCC-6.3.0-2.27-uv.eb
+++ b/o/OpenMPI/OpenMPI-1.10.7-GCC-6.3.0-2.27-uv.eb
@@ -39,8 +39,8 @@ sanity_check_paths = {
     'dirs': ["include/openmpi/ompi/mpi/cxx"],
 }
 
-modextravars = {'OMPI_MCA_btl_tcp_if_include': 'lo',
-#                'OMPI_MCA_oob_tcp_if_include': '10.0.0.0/8',
+modextravars = {
+    'OMPI_MCA_btl':'^tcp,openib',
 }
 
 moduleclass = 'mpi'
diff --git a/o/OpenMPI/OpenMPI-2.1.1-GCC-6.3.0-2.27-uv.eb b/o/OpenMPI/OpenMPI-2.1.1-GCC-6.3.0-2.27-uv.eb
index 996c27c1..adde5a82 100644
--- a/o/OpenMPI/OpenMPI-2.1.1-GCC-6.3.0-2.27-uv.eb
+++ b/o/OpenMPI/OpenMPI-2.1.1-GCC-6.3.0-2.27-uv.eb
@@ -43,8 +43,9 @@ sanity_check_paths = {
     'dirs': [],
 }
 
-modextravars = {'OMPI_MCA_btl_tcp_if_include': 'lo',
-               # 'OMPI_MCA_btl_tcp_if_exclude': 'bond0,bond1,bond2,ib0,ib1',
+modextravars = {
+    'OMPI_MCA_btl':'^tcp,openib',
+    'OMPI_MCA_oob':'^tcp',
 }
 
 moduleclass = 'mpi'
diff --git a/o/OpenMPI/OpenMPI-3.0.0-GCC-6.3.0-2.27-uv.eb b/o/OpenMPI/OpenMPI-3.0.0-GCC-6.3.0-2.27-uv.eb
index c7a94a69..2b99e593 100644
--- a/o/OpenMPI/OpenMPI-3.0.0-GCC-6.3.0-2.27-uv.eb
+++ b/o/OpenMPI/OpenMPI-3.0.0-GCC-6.3.0-2.27-uv.eb
@@ -47,8 +47,9 @@ sanity_check_paths = {
     'dirs': [],
 }
 
-modextravars = {'OMPI_MCA_btl_tcp_if_include': 'lo',
-#                'OMPI_MCA_oob_tcp_if_include': '10.0.0.0/8',
+modextravars = {
+    'OMPI_MCA_btl':'^tcp,openib',
+    'OMPI_MCA_oob':'^tcp',
 }
 
 moduleclass = 'mpi'
diff --git a/p/packaging/packaging-17.1-Py-3.6.eb b/p/packaging/packaging-17.1-Py-3.6.eb
new file mode 100644
index 00000000..f7832f2f
--- /dev/null
+++ b/p/packaging/packaging-17.1-Py-3.6.eb
@@ -0,0 +1,25 @@
+# IT4Innovations 2018
+
+easyblock = "PythonPackage"
+name = 'packaging'
+version = '17.1'
+
+homepage = 'https://pypi.python.org/pypi/packaging'
+description = 'Core utilities for Python packages.'
+
+toolchain = {'name': 'Py', 'version': '3.6'}
+
+source_urls = [PYPI_SOURCE]
+sources = [SOURCE_TAR_GZ]
+
+dependencies = [
+    ('six', '1.11.0'),
+    ('pyparsing', '2.2.0'),
+]
+
+sanity_check_paths = {
+    'files': ['lib/python3.6/site-packages/%(name)s-%(version)s-py3.6.egg'],
+    'dirs': [],
+}
+
+moduleclass = 'python'