diff --git a/sys/net/ifdi_if.m b/sys/net/ifdi_if.m
index f4a3db5092a..cb24ba36ee6 100644
--- a/sys/net/ifdi_if.m
+++ b/sys/net/ifdi_if.m
@@ -117,6 +117,12 @@ CODE {
 	{
 		return (false);
 	}
+
+	static int
+	null_get_downreason(if_ctx_t _ctx __unused, struct ifdownreason *_ifdr __unused)
+	{
+		return (ENOTSUP);
+	}
 };
 
 #
@@ -364,3 +370,8 @@ METHOD bool needs_restart {
 	if_ctx_t _ctx;
 	enum iflib_restart_event _event;
 } DEFAULT null_needs_restart;
+
+METHOD int get_downreason {
+	if_ctx_t _ctx;
+	struct ifdownreason *_ifdr;
+} DEFAULT null_get_downreason;
diff --git a/sys/net/iflib.c b/sys/net/iflib.c
index 8e2fd257ca7..08282d1799b 100644
--- a/sys/net/iflib.c
+++ b/sys/net/iflib.c
@@ -4540,6 +4540,11 @@ iflib_if_ioctl(if_t ifp, u_long command, caddr_t data)
 		err = IFDI_PRIV_IOCTL(ctx, command, data);
 		CTX_UNLOCK(ctx);
 		break;
+	case SIOCGIFDOWNREASON:
+		CTX_LOCK(ctx);
+		err = IFDI_GET_DOWNREASON(ctx, (struct ifdownreason *)data);
+		CTX_UNLOCK(ctx);
+		break;
 	default:
 		err = ether_ioctl(ifp, command, data);
 		break;