diff -Nur a/bridge.c netifd-2019-08-05-5e02f944/bridge.c
--- a/bridge.c	2020-05-01 16:39:45.875448393 -0700
+++ netifd-2019-08-05-5e02f944/bridge.c	2020-05-01 16:43:05.086378758 -0700
@@ -34,6 +34,7 @@
 	BRIDGE_ATTR_BRIDGE_EMPTY,
 	BRIDGE_ATTR_MULTICAST_QUERIER,
 	BRIDGE_ATTR_HASH_MAX,
+	BRIDGE_ATTR_HAIRPIN,
 	BRIDGE_ATTR_ROBUSTNESS,
 	BRIDGE_ATTR_QUERY_INTERVAL,
 	BRIDGE_ATTR_QUERY_RESPONSE_INTERVAL,
@@ -53,6 +54,7 @@
 	[BRIDGE_ATTR_BRIDGE_EMPTY] = { "bridge_empty", BLOBMSG_TYPE_BOOL },
 	[BRIDGE_ATTR_MULTICAST_QUERIER] = { "multicast_querier", BLOBMSG_TYPE_BOOL },
 	[BRIDGE_ATTR_HASH_MAX] = { "hash_max", BLOBMSG_TYPE_INT32 },
+	[BRIDGE_ATTR_HAIRPIN] = { "hairpin", BLOBMSG_TYPE_BOOL },
 	[BRIDGE_ATTR_ROBUSTNESS] = { "robustness", BLOBMSG_TYPE_INT32 },
 	[BRIDGE_ATTR_QUERY_INTERVAL] = { "query_interval", BLOBMSG_TYPE_INT32 },
 	[BRIDGE_ATTR_QUERY_RESPONSE_INTERVAL] = { "query_response_interval", BLOBMSG_TYPE_INT32 },
@@ -219,6 +221,7 @@
 	}
 
 	device_set_present(&bst->dev, true);
+	system_bridge_set_hairpin(bm->dev.dev, bst->config.hairpin);
 	device_broadcast_event(&bst->dev, DEV_EVENT_TOPO_CHANGE);
 
 	return 0;
@@ -577,6 +580,7 @@
 	cfg->hash_max = 512;
 	cfg->bridge_empty = false;
 	cfg->priority = 0x7FFF;
+	cfg->hairpin = false;
 
 	if ((cur = tb[BRIDGE_ATTR_STP]))
 		cfg->stp = blobmsg_get_bool(cur);
@@ -633,6 +637,10 @@
 
 	if ((cur = tb[BRIDGE_ATTR_BRIDGE_EMPTY]))
 		cfg->bridge_empty = blobmsg_get_bool(cur);
+
+	if ((cur = tb[BRIDGE_ATTR_HAIRPIN]))
+		cfg->hairpin = blobmsg_get_bool(cur);
+
 }
 
 static enum dev_change_type
diff -Nur a/system.h netifd-2019-08-05-5e02f944/system.h
--- a/system.h	2020-05-01 16:39:45.879448372 -0700
+++ netifd-2019-08-05-5e02f944/system.h	2020-05-01 16:40:35.427182113 -0700
@@ -126,6 +126,7 @@
 	int hello_time;
 	int max_age;
 	int hash_max;
+	int hairpin;
 };
 
 struct bonding_config {
@@ -190,6 +191,7 @@
 int system_bridge_delbr(struct device *bridge);
 int system_bridge_addif(struct device *bridge, struct device *dev);
 int system_bridge_delif(struct device *bridge, struct device *dev);
+void system_bridge_set_hairpin(struct device *dev, int enable);
 
 int system_bonding_addbonding(struct device *bonding, struct bonding_config *cfg);
 int system_bonding_delbonding(struct device *bonding);
diff -Nur a/system-linux.c netifd-2019-08-05-5e02f944/system-linux.c
--- a/system-linux.c	2020-05-01 16:39:45.879448372 -0700
+++ netifd-2019-08-05-5e02f944/system-linux.c	2020-05-01 16:40:35.423182135 -0700
@@ -910,6 +910,13 @@
 	return system_bridge_if(bridge->ifname, dev, SIOCBRDELIF, NULL);
 }
 
+void system_bridge_set_hairpin(struct device *dev, int enable)
+{
+	char mode[4];
+	snprintf(mode, sizeof(mode), "%d", !!enable);
+	system_set_dev_sysctl("/sys/class/net/%s/brport/hairpin_mode", dev->ifname, mode);
+}
+
 int system_if_resolve(struct device *dev)
 {
 	struct ifreq ifr;