diff --git a/hostapd/config_file.c b/hostapd/config_file.c
index 65f1eb9b5..832ff5517 100644
--- a/hostapd/config_file.c
+++ b/hostapd/config_file.c
@@ -3560,6 +3560,8 @@ static int hostapd_config_fill(struct hostapd_config *conf,
 		}
 		bss->fils_cache_id_set = 1;
 #endif /* CONFIG_FILS */
+	} else if (os_strcmp(buf, "multicast_to_unicast") == 0) {
+		bss->multicast_to_unicast = atoi(pos);
 	} else {
 		wpa_printf(MSG_ERROR,
 			   "Line %d: unknown configuration item '%s'",
diff --git a/hostapd/hostapd.conf b/hostapd/hostapd.conf
index 9ea3d6c96..1fd4fcc95 100644
--- a/hostapd/hostapd.conf
+++ b/hostapd/hostapd.conf
@@ -495,6 +495,22 @@ wmm_ac_vo_acm=0
 # <station count>:<channel utilization>:<available admission capacity>
 #bss_load_test=12:80:20000
 
+# Multicast to unicast conversion
+# Request that the AP will do multicast-to-unicast conversion for ARP, IPv4, and
+# IPv6 frames (possibly within 802.1Q). If enabled, such frames are to be sent
+# to each station separately, with the DA replaced by their own MAC address
+# rather than the group address.
+#
+# Note that this may break certain expectations of the receiver, such as the
+# ability to drop unicast IP packets received within multicast L2 frames, or the
+# ability to not send ICMP destination unreachable messages for packets received
+# in L2 multicast (which is required, but the receiver can't tell the difference
+# if this new option is enabled).
+#
+# This also doesn't implement the 802.11 DMS (directed multicast service).
+#
+#multicast_to_unicast=0
+
 ##### IEEE 802.11n related configuration ######################################
 
 # ieee80211n: Whether IEEE 802.11n (HT) is enabled
diff --git a/src/ap/ap_config.h b/src/ap/ap_config.h
index b56bb3109..7d8f28317 100644
--- a/src/ap/ap_config.h
+++ b/src/ap/ap_config.h
@@ -601,6 +601,8 @@ struct hostapd_bss_config {
 	u8 fils_cache_id[FILS_CACHE_ID_LEN];
 	int fils_cache_id_set;
 #endif /* CONFIG_FILS */
+
+	int multicast_to_unicast;
 };
 
 
diff --git a/src/ap/beacon.c b/src/ap/beacon.c
index 5b708f5ea..3788a9764 100644
--- a/src/ap/beacon.c
+++ b/src/ap/beacon.c
@@ -1288,6 +1288,7 @@ int ieee802_11_build_ap_params(struct hostapd_data *hapd,
 		params->osen = 1;
 	}
 #endif /* CONFIG_HS20 */
+	params->multicast_to_unicast = hapd->conf->multicast_to_unicast;
 	params->pbss = hapd->conf->pbss;
 	return 0;
 }
diff --git a/src/drivers/driver.h b/src/drivers/driver.h
index 71ad0069e..212f16ca0 100644
--- a/src/drivers/driver.h
+++ b/src/drivers/driver.h
@@ -1170,6 +1170,27 @@ struct wpa_driver_ap_params {
 	 * infrastructure BSS. Valid only for DMG network.
 	 */
 	int pbss;
+
+	/**
+	 * multicast_to_unicast - Whether to use multicast_to_unicast
+	 *
+	 * If this is non-zero, the AP is requested to perform multicast to
+	 * unicast conversion for ARP, IPv4, and IPv6 frames (possibly within
+	 * 802.1Q). If enabled, such frames are to be sent to each station
+	 * separately, with the DA replaced by their own MAC address rather
+	 * than the group address.
+	 *
+	 * Note that this may break certain expectations of the receiver, such
+	 * as the ability to drop unicast IP packets received within multicast
+	 * L2 frames, or the ability to not send ICMP destination unreachable
+	 * messages for packets received in L2 multicast (which is required,
+	 * but the receiver can't tell the difference if this new option is
+	 * enabled.)
+	 *
+	 * This also doesn't implement the 802.11 DMS (directed multicast
+	 * service).
+	 */
+	int multicast_to_unicast;
 };
 
 struct wpa_driver_mesh_bss_params {
diff --git a/src/drivers/driver_nl80211.c b/src/drivers/driver_nl80211.c
index 6bd984d56..b23c440fd 100644
--- a/src/drivers/driver_nl80211.c
+++ b/src/drivers/driver_nl80211.c
@@ -3666,6 +3666,52 @@ static int nl80211_put_beacon_rate(struct nl_msg *msg, const u64 flags,
 }
 
 
+static int nl80211_set_multicast_to_unicast(struct i802_bss *bss,
+					    int multicast_to_unicast)
+{
+	struct wpa_driver_nl80211_data *drv = bss->drv;
+	struct nl_msg *msg;
+	int ret;
+
+	msg = nl80211_bss_msg(bss, 0, NL80211_CMD_SET_MULTICAST_TO_UNICAST);
+	if (!msg ||
+	    (multicast_to_unicast &&
+	     nla_put_flag(msg, NL80211_ATTR_MULTICAST_TO_UNICAST_ENABLED))) {
+		wpa_printf(MSG_ERROR,
+			   "nl80211: Failed to build NL80211_CMD_SET_MULTICAST_TO_UNICAST msg for %s",
+			   bss->ifname);
+		nlmsg_free(msg);
+		return -ENOBUFS;
+	}
+
+	ret = send_and_recv_msgs(drv, msg, NULL, NULL);
+
+	switch (ret) {
+	case 0:
+		wpa_printf(MSG_DEBUG,
+			   "nl80211: multicast to unicast %s on interface %s",
+			   multicast_to_unicast ? "enabled" : "disabled",
+			   bss->ifname);
+		break;
+	case -EOPNOTSUPP:
+		if (!multicast_to_unicast)
+			break;
+		wpa_printf(MSG_INFO,
+			   "nl80211: multicast to unicast not supported on interface %s",
+			   bss->ifname);
+		break;
+	default:
+		wpa_printf(MSG_ERROR,
+			   "nl80211: %s multicast to unicast failed with %d (%s) on interface %s",
+			   multicast_to_unicast ? "enabling" : "disabling",
+			   ret, strerror(-ret), bss->ifname);
+		break;
+	}
+
+	return ret;
+}
+
+
 static int wpa_driver_nl80211_set_ap(void *priv,
 				     struct wpa_driver_ap_params *params)
 {
@@ -3885,6 +3931,8 @@ static int wpa_driver_nl80211_set_ap(void *priv,
 		nl80211_set_bss(bss, params->cts_protect, params->preamble,
 				params->short_slot_time, params->ht_opmode,
 				params->isolate, params->basic_rates);
+		nl80211_set_multicast_to_unicast(bss,
+						 params->multicast_to_unicast);
 		if (beacon_set && params->freq &&
 		    params->freq->bandwidth != bss->bandwidth) {
 			wpa_printf(MSG_DEBUG,