diff --git a/ansible/roles/neutron/defaults/main.yml b/ansible/roles/neutron/defaults/main.yml
index 78ec16ae8a..2835b27f52 100644
--- a/ansible/roles/neutron/defaults/main.yml
+++ b/ansible/roles/neutron/defaults/main.yml
@@ -538,7 +538,7 @@ openstack_neutron_auth: "{{ openstack_auth }}"
 
 # Set to KOLLA_SKIP to skip setting these (even if set already - total ignore).
 # Set to KOLLA_UNSET to make Kolla unset these in the managed sysctl.conf file.
-neutron_l3_agent_host_rp_filter_mode: 0
+neutron_l3_agent_host_rp_filter_mode: KOLLA_SKIP
 neutron_l3_agent_host_ipv4_neigh_gc_thresh1: 128
 neutron_l3_agent_host_ipv4_neigh_gc_thresh2: 28672
 neutron_l3_agent_host_ipv4_neigh_gc_thresh3: 32768
diff --git a/ansible/roles/nova-cell/defaults/main.yml b/ansible/roles/nova-cell/defaults/main.yml
index 3d5e139752..98f2fc6954 100644
--- a/ansible/roles/nova-cell/defaults/main.yml
+++ b/ansible/roles/nova-cell/defaults/main.yml
@@ -452,7 +452,7 @@ openstack_nova_auth: "{{ openstack_auth }}"
 
 # Set to KOLLA_SKIP to skip setting these (even if set already - total ignore).
 # Set to KOLLA_UNSET to make Kolla unset these in the managed sysctl.conf file.
-nova_compute_host_rp_filter_mode: 0
+nova_compute_host_rp_filter_mode: KOLLA_SKIP
 
 nova_safety_upgrade: "no"
 
diff --git a/releasenotes/notes/bug-1837551-4237e2df8725ffc7.yaml b/releasenotes/notes/bug-1837551-4237e2df8725ffc7.yaml
new file mode 100644
index 0000000000..c50816b940
--- /dev/null
+++ b/releasenotes/notes/bug-1837551-4237e2df8725ffc7.yaml
@@ -0,0 +1,13 @@
+---
+upgrade:
+  - |
+    ``rp_filter`` is no longer set by Kolla Ansible by default.
+    Users may wish to remove the related setting from
+    ``kolla_sysctl_conf_path`` (``/etc/sysctl.conf`` by default).
+deprecations:
+  - |
+    Setting ``rp_filter`` via Kolla Ansible is deprecated.
+fixes:
+  - |
+    Workarounds ``rp_filter`` setting issues by defaulting to skipping it.
+    `LP#1837551 <https://launchpad.net/bugs/1837551>`__