diff --git a/net/frr/src/etc/inc/plugins.inc.d/frr.inc b/net/frr/src/etc/inc/plugins.inc.d/frr.inc
index 59fd0db9a..d6e04540f 100644
--- a/net/frr/src/etc/inc/plugins.inc.d/frr.inc
+++ b/net/frr/src/etc/inc/plugins.inc.d/frr.inc
@@ -58,6 +58,22 @@ function frr_firewall($fw)
                     ),
                     null
                 );
+                $fw->registerFilterRule(
+                    1, /* priority */
+                    array(
+                        'ipprotocol'     => 'inet',
+                        'protocol'       => 'ospf',
+                        'statetype'      => 'keep',
+                        'label'          => 'Pass OSPF UNICAST (autogenerated)',
+                        'from'           => $network->ipaddr . '/' . $network->netmask,
+                        'to'             => '(self)',
+                        'direction'      => 'in',
+                        'type'           => 'pass',
+                        'disablereplyto' => 1,
+                        'quick'          => true
+                    ),
+                    null
+                );
             }
         }
     }