diff --git a/Documentation/netlink/specs/fou.yaml b/Documentation/netlink/specs/fou.yaml
index 331f1b342b3a..32d34be1dc63 100644
--- a/Documentation/netlink/specs/fou.yaml
+++ b/Documentation/netlink/specs/fou.yaml
@@ -90,6 +90,7 @@ operations:
         request: &all_attrs
           attributes:
             - port
+            - af
             - ipproto
             - type
             - remcsum-nopartial