diff --git a/lib/if.c b/lib/if.c
index 2541e6e45a..2320093a15 100644
--- a/lib/if.c
+++ b/lib/if.c
@@ -222,18 +222,6 @@ struct interface *if_lookup_by_index(ifindex_t ifindex, vrf_id_t vrf_id)
 	struct vrf *vrf;
 	struct interface if_tmp;
 
-	if (vrf_id == VRF_UNKNOWN) {
-		struct interface *ifp;
-
-		RB_FOREACH (vrf, vrf_id_head, &vrfs_by_id) {
-			ifp = if_lookup_by_index(ifindex, vrf->vrf_id);
-			if (ifp)
-				return ifp;
-		}
-
-		return NULL;
-	}
-
 	vrf = vrf_lookup_by_id(vrf_id);
 	if (!vrf)
 		return NULL;