diff --git a/CONTRIBUTING.md b/CONTRIBUTING.md
index f5f1587d8..cf8e58a17 100644
--- a/CONTRIBUTING.md
+++ b/CONTRIBUTING.md
@@ -103,14 +103,18 @@ any work that's already in progress.
 be assigned to you so that others are aware it's being worked on. A maintainer
 will then mark the issue as "accepted."
 
-* Any pull request which does _not_ relate to an accepted issue will be closed.
+* Any pull request which does _not_ relate to an **accepted** issue will be closed.
 
-* All major new functionality must include relevant tests where applicable.
+* All new functionality must include relevant tests where applicable.
 
 * When submitting a pull request, please be sure to work off of the `develop`
 branch, rather than `master`. The `develop` branch is used for ongoing
 development, while `master` is used for tagging stable releases.
 
+* In most cases, it is not necessary to add a changelog entry: A maintainer will
+take care of this when the PR is merged. (This helps avoid merge conflicts
+resulting from multiple PRs being submitted simultaneously.)
+
 * All code submissions should meet the following criteria (CI will enforce
 these checks):
 
diff --git a/docs/release-notes/version-2.9.md b/docs/release-notes/version-2.9.md
index 6c7839818..ebed19f20 100644
--- a/docs/release-notes/version-2.9.md
+++ b/docs/release-notes/version-2.9.md
@@ -1,5 +1,19 @@
 # NetBox v2.9
 
+## v2.9.10 (FUTURE)
+
+### Enhancements
+
+* [#5337](https://github.com/netbox-community/netbox/issues/5337) - Add "splice" type for pass-through ports
+
+### Bug Fixes
+
+* [#5235](https://github.com/netbox-community/netbox/issues/5235) - Fix exception when editing IP address with a NAT IP assigned to a non-racked device
+* [#5345](https://github.com/netbox-community/netbox/issues/5345) - Fix non-deterministic ordering of prefixes and IP addresses
+* [#5350](https://github.com/netbox-community/netbox/issues/5350) - Filter available racks by selected group when creating a rack reservation
+
+---
+
 ## v2.9.9 (2020-11-09)
 
 ### Enhancements
@@ -17,7 +31,6 @@
 * [#5328](https://github.com/netbox-community/netbox/issues/5328) - Fix CreatedUpdatedFilterTest when running in non-UTC timezone
 * [#5331](https://github.com/netbox-community/netbox/issues/5331) - Fix filtering of sites by null region
 
-
 ---
 
 ## v2.9.8 (2020-10-30)
diff --git a/netbox/dcim/choices.py b/netbox/dcim/choices.py
index d6aee8637..a6e0b1a0c 100644
--- a/netbox/dcim/choices.py
+++ b/netbox/dcim/choices.py
@@ -856,6 +856,7 @@ class PortTypeChoices(ChoiceSet):
     TYPE_MPO = 'mpo'
     TYPE_LSH = 'lsh'
     TYPE_LSH_APC = 'lsh-apc'
+    TYPE_SPLICE = 'splice'
 
     CHOICES = (
         (
@@ -883,6 +884,7 @@ class PortTypeChoices(ChoiceSet):
                 (TYPE_SC, 'SC'),
                 (TYPE_SC_APC, 'SC/APC'),
                 (TYPE_ST, 'ST'),
+                (TYPE_SPLICE, 'Splice'),
             )
         )
     )
diff --git a/netbox/dcim/forms.py b/netbox/dcim/forms.py
index a80c88c9c..f54371ce4 100644
--- a/netbox/dcim/forms.py
+++ b/netbox/dcim/forms.py
@@ -741,7 +741,7 @@ class RackReservationForm(BootstrapMixin, TenancyForm, CustomFieldModelForm):
         display_field='display_name',
         query_params={
             'site_id': '$site',
-            'group_id': '$rack',
+            'group_id': '$rack_group',
         }
     )
     units = NumericArrayField(
diff --git a/netbox/ipam/api/views.py b/netbox/ipam/api/views.py
index 0d50b6ea7..9e80e216b 100644
--- a/netbox/ipam/api/views.py
+++ b/netbox/ipam/api/views.py
@@ -90,7 +90,9 @@ class RoleViewSet(ModelViewSet):
 #
 
 class PrefixViewSet(CustomFieldModelViewSet):
-    queryset = Prefix.objects.prefetch_related('site', 'vrf__tenant', 'tenant', 'vlan', 'role', 'tags')
+    queryset = Prefix.objects.prefetch_related(
+        'site', 'vrf__tenant', 'tenant', 'vlan', 'role', 'tags'
+    ).order_by(*Prefix._meta.ordering)
     serializer_class = serializers.PrefixSerializer
     filterset_class = filters.PrefixFilterSet
 
@@ -260,7 +262,7 @@ class PrefixViewSet(CustomFieldModelViewSet):
 class IPAddressViewSet(CustomFieldModelViewSet):
     queryset = IPAddress.objects.prefetch_related(
         'vrf__tenant', 'tenant', 'nat_inside', 'nat_outside', 'tags', 'assigned_object'
-    )
+    ).order_by(*IPAddress._meta.ordering)
     serializer_class = serializers.IPAddressSerializer
     filterset_class = filters.IPAddressFilterSet
 
diff --git a/netbox/ipam/forms.py b/netbox/ipam/forms.py
index 1434002ea..0dcb02a0c 100644
--- a/netbox/ipam/forms.py
+++ b/netbox/ipam/forms.py
@@ -752,7 +752,8 @@ class IPAddressForm(BootstrapMixin, TenancyForm, ReturnURLForm, CustomFieldModel
                 nat_inside_parent = instance.nat_inside.assigned_object
                 if type(nat_inside_parent) is Interface:
                     initial['nat_site'] = nat_inside_parent.device.site.pk
-                    initial['nat_rack'] = nat_inside_parent.device.rack.pk
+                    if nat_inside_parent.device.rack:
+                        initial['nat_rack'] = nat_inside_parent.device.rack.pk
                     initial['nat_device'] = nat_inside_parent.device.pk
                 elif type(nat_inside_parent) is VMInterface:
                     initial['nat_cluster'] = nat_inside_parent.virtual_machine.cluster.pk