diff --git a/netbox/ipam/tables.py b/netbox/ipam/tables.py
index 24bb9b3c2..72c760d34 100644
--- a/netbox/ipam/tables.py
+++ b/netbox/ipam/tables.py
@@ -71,7 +71,7 @@ IPADDRESS_LINK = """
 {% if record.pk %}
     <a href="{{ record.get_absolute_url }}">{{ record.address }}</a>
 {% elif perms.ipam.add_ipaddress %}
-    <a href="{% url 'ipam:ipaddress_add' %}?address={{ record.1 }}{% if prefix.vrf %}&vrf={{ prefix.vrf.pk }}{% endif %}" class="btn btn-xs btn-success">{% if record.0 <= 65536 %}{{ record.0 }}{% else %}Many{% endif %} IP{{ record.0|pluralize }} available</a>
+    <a href="{% url 'ipam:ipaddress_add' %}?address={{ record.1 }}{% if prefix.vrf %}&vrf={{ prefix.vrf.pk }}{% endif %}{% if prefix.tenant %}&tenant={{ prefix.tenant.pk }}{% endif %}" class="btn btn-xs btn-success">{% if record.0 <= 65536 %}{{ record.0 }}{% else %}Many{% endif %} IP{{ record.0|pluralize }} available</a>
 {% else %}
     {% if record.0 <= 65536 %}{{ record.0 }}{% else %}Many{% endif %} IP{{ record.0|pluralize }} available
 {% endif %}
diff --git a/netbox/netbox/settings.py b/netbox/netbox/settings.py
index 6d944d4db..1af4733be 100644
--- a/netbox/netbox/settings.py
+++ b/netbox/netbox/settings.py
@@ -13,7 +13,7 @@ except ImportError:
     )
 
 
-VERSION = '2.1.5'
+VERSION = '2.1.6'
 
 BASE_DIR = os.path.dirname(os.path.dirname(os.path.abspath(__file__)))
 
@@ -228,7 +228,7 @@ REST_FRAMEWORK = {
         'utilities.api.TokenAuthentication',
     ),
     'DEFAULT_FILTER_BACKENDS': (
-        'rest_framework.filters.DjangoFilterBackend',
+        'django_filters.rest_framework.DjangoFilterBackend',
     ),
     'DEFAULT_PAGINATION_CLASS': 'utilities.api.OptionalLimitOffsetPagination',
     'DEFAULT_PERMISSION_CLASSES': (
diff --git a/netbox/netbox/views.py b/netbox/netbox/views.py
index d5224b462..72bb8dcec 100644
--- a/netbox/netbox/views.py
+++ b/netbox/netbox/views.py
@@ -14,7 +14,7 @@ from circuits.models import Circuit, Provider
 from circuits.tables import CircuitTable, ProviderTable
 from dcim.filters import DeviceFilter, DeviceTypeFilter, RackFilter, SiteFilter
 from dcim.models import ConsolePort, Device, DeviceType, InterfaceConnection, PowerPort, Rack, Site
-from dcim.tables import DeviceTable, DeviceTypeTable, RackTable, SiteTable
+from dcim.tables import DeviceDetailTable, DeviceTypeTable, RackTable, SiteTable
 from extras.models import TopologyMap, UserAction
 from ipam.filters import AggregateFilter, IPAddressFilter, PrefixFilter, VLANFilter, VRFFilter
 from ipam.models import Aggregate, IPAddress, Prefix, VLAN, VRF
@@ -64,10 +64,10 @@ SEARCH_TYPES = OrderedDict((
     }),
     ('device', {
         'queryset': Device.objects.select_related(
-            'device_type__manufacturer', 'device_role', 'tenant', 'site', 'rack'
+            'device_type__manufacturer', 'device_role', 'tenant', 'site', 'rack', 'primary_ip4', 'primary_ip6',
         ),
         'filter': DeviceFilter,
-        'table': DeviceTable,
+        'table': DeviceDetailTable,
         'url': 'dcim:device_list',
     }),
     # IPAM
diff --git a/netbox/templates/ipam/inc/prefix_header.html b/netbox/templates/ipam/inc/prefix_header.html
index 6deb10e57..d9e017860 100644
--- a/netbox/templates/ipam/inc/prefix_header.html
+++ b/netbox/templates/ipam/inc/prefix_header.html
@@ -23,7 +23,7 @@
 </div>
 <div class="pull-right">
     {% if perms.ipam.add_ipaddress %}
-		<a href="{% url 'ipam:ipaddress_add' %}?address={{ prefix.prefix }}{% if prefix.vrf %}&vrf={{ prefix.vrf.pk }}{% endif %}" class="btn btn-success">
+		<a href="{% url 'ipam:ipaddress_add' %}?address={{ prefix.prefix }}{% if prefix.vrf %}&vrf={{ prefix.vrf.pk }}{% endif %}{% if prefix.tenant %}&tenant={{ prefix.tenant.pk }}{% endif %}" class="btn btn-success">
 			<span class="fa fa-plus" aria-hidden="true"></span>
 			Add an IP Address
 		</a>
diff --git a/netbox/utilities/api.py b/netbox/utilities/api.py
index 3698bc47c..584b00fc3 100644
--- a/netbox/utilities/api.py
+++ b/netbox/utilities/api.py
@@ -4,13 +4,12 @@ from django.conf import settings
 from django.contrib.contenttypes.models import ContentType
 
 from rest_framework import authentication, exceptions
-from rest_framework.compat import is_authenticated
 from rest_framework.exceptions import APIException
 from rest_framework.pagination import LimitOffsetPagination
 from rest_framework.permissions import BasePermission, DjangoModelPermissions, SAFE_METHODS
 from rest_framework.renderers import BrowsableAPIRenderer
 from rest_framework.serializers import Field, ModelSerializer, ValidationError
-from rest_framework.views import get_view_name as drf_get_view_name
+from rest_framework.utils import formatting
 
 from users.models import Token
 
@@ -75,7 +74,7 @@ class IsAuthenticatedOrLoginNotRequired(BasePermission):
     def has_permission(self, request, view):
         if not settings.LOGIN_REQUIRED:
             return True
-        return request.user and is_authenticated(request.user)
+        return request.user.is_authenticated()
 
 
 #
@@ -228,10 +227,18 @@ def get_view_name(view_cls, suffix=None):
     Derive the view name from its associated model, if it has one. Fall back to DRF's built-in `get_view_name`.
     """
     if hasattr(view_cls, 'queryset'):
+        # Determine the model name from the queryset.
         name = view_cls.queryset.model._meta.verbose_name
         name = ' '.join([w[0].upper() + w[1:] for w in name.split()])  # Capitalize each word
-        if suffix:
-            name = "{} {}".format(name, suffix)
-        return name
 
-    return drf_get_view_name(view_cls, suffix)
+    else:
+        # Replicate DRF's built-in behavior.
+        name = view_cls.__name__
+        name = formatting.remove_trailing_string(name, 'View')
+        name = formatting.remove_trailing_string(name, 'ViewSet')
+        name = formatting.camelcase_to_spaces(name)
+
+    if suffix:
+        name += ' ' + suffix
+
+    return name