diff --git a/net/bridge/br_fdb.c b/net/bridge/br_fdb.c
index 9326c37..72c5976 100644
--- a/net/bridge/br_fdb.c
+++ b/net/bridge/br_fdb.c
@@ -285,7 +285,11 @@
 
 			/* convert from internal format to API */
 			memcpy(fe->mac_addr, f->addr.addr, ETH_ALEN);
+
+			/* due to ABI compat need to split into hi/lo */
 			fe->port_no = f->dst->port_no;
+			fe->port_hi = f->dst->port_no >> 8;
+
 			fe->is_local = f->is_local;
 			if (!f->is_static)
 				fe->ageing_timer_value = jiffies_to_clock_t(jiffies - f->ageing_timer);