diff --git a/wpa_supplicant/config.c b/wpa_supplicant/config.c
index b25e0f6..7a860b6 100644
--- a/wpa_supplicant/config.c
+++ b/wpa_supplicant/config.c
@@ -2584,6 +2584,7 @@
 	config->bss_expiration_scan_count = DEFAULT_BSS_EXPIRATION_SCAN_COUNT;
 	config->max_num_sta = DEFAULT_MAX_NUM_STA;
 	config->access_network_type = DEFAULT_ACCESS_NETWORK_TYPE;
+	config->scan_cur_freq = DEFAULT_SCAN_CUR_FREQ;
 	config->wmm_ac_params[0] = ac_be;
 	config->wmm_ac_params[1] = ac_bk;
 	config->wmm_ac_params[2] = ac_vi;
@@ -3105,6 +3106,7 @@
 	{ FUNC(ap_vendor_elements), 0 },
 	{ INT_RANGE(ignore_old_scan_res, 0, 1), 0 },
 	{ FUNC(freq_list), 0 },
+	{ INT(scan_cur_freq), 0 },
 	{ INT(sched_scan_interval), 0 },
 };
 
diff --git a/wpa_supplicant/config.h b/wpa_supplicant/config.h
index a1a5239..1748cf3 100644
--- a/wpa_supplicant/config.h
+++ b/wpa_supplicant/config.h
@@ -24,6 +24,7 @@
 #define DEFAULT_BSS_EXPIRATION_SCAN_COUNT 2
 #define DEFAULT_MAX_NUM_STA 128
 #define DEFAULT_ACCESS_NETWORK_TYPE 15
+#define DEFAULT_SCAN_CUR_FREQ 0
 
 #include "config_ssid.h"
 #include "wps/wps.h"
@@ -653,6 +654,14 @@
 	int *freq_list;
 
 	/**
+	 * scan_cur_freq - Whether to scan only the current channel
+	 *
+	 * If true, attempt to scan only the current channel if any other
+	 * VIFs on this radio are already associated on a particular channel.
+	 */
+	int scan_cur_freq;
+
+	/**
 	 * changed_parameters - Bitmap of changed parameters since last update
 	 */
 	unsigned int changed_parameters;
diff --git a/wpa_supplicant/config_file.c b/wpa_supplicant/config_file.c
index 8ff4285..d03de0b 100644
--- a/wpa_supplicant/config_file.c
+++ b/wpa_supplicant/config_file.c
@@ -1025,6 +1025,8 @@
 		}
 		fprintf(f, "\n");
 	}
+	if (config->scan_cur_freq != DEFAULT_SCAN_CUR_FREQ)
+		fprintf(f, "scan_cur_freq=%d\n", config->scan_cur_freq);
 
 	if (config->sched_scan_interval)
 		fprintf(f, "sched_scan_interval=%u\n",
diff --git a/wpa_supplicant/events.c b/wpa_supplicant/events.c
index cf2800e..6d9b587 100644
--- a/wpa_supplicant/events.c
+++ b/wpa_supplicant/events.c
@@ -1971,8 +1971,9 @@
 			"pre-shared key may be incorrect");
 		wpas_auth_failed(wpa_s);
 	}
-	if (!wpa_s->auto_reconnect_disabled ||
-	    wpa_s->key_mgmt == WPA_KEY_MGMT_WPS) {
+	if (!wpa_s->disconnected &&
+	    (!wpa_s->auto_reconnect_disabled ||
+	     wpa_s->key_mgmt == WPA_KEY_MGMT_WPS)) {
 		wpa_dbg(wpa_s, MSG_DEBUG, "Auto connect enabled: try to "
 			"reconnect (wps=%d wpa_state=%d)",
 			wpa_s->key_mgmt == WPA_KEY_MGMT_WPS,
diff --git a/wpa_supplicant/scan.c b/wpa_supplicant/scan.c
index 02c11b0..04148a8 100644
--- a/wpa_supplicant/scan.c
+++ b/wpa_supplicant/scan.c
@@ -486,6 +486,7 @@
 	return 0;
 }
 
+#endif /* CONFIG_P2P */
 
 /*
  * Find the operating frequency of any other virtual interface that is using
@@ -525,8 +526,6 @@
 	return 0;
 }
 
-#endif /* CONFIG_P2P */
-
 
 static void wpa_supplicant_scan(void *eloop_ctx, void *timeout_ctx)
 {
@@ -581,7 +580,7 @@
 	}
 
 #ifdef CONFIG_P2P
-	if (wpas_p2p_in_progress(wpa_s)) {
+	if (wpas_p2p_in_progress(wpa_s) || wpas_wpa_is_in_progress(wpa_s)) {
 		if (wpa_s->sta_scan_pending &&
 		    wpas_p2p_in_progress(wpa_s) == 2 &&
 		    wpa_s->global->p2p_cb_on_scan_complete) {
@@ -769,6 +768,19 @@
 		int_array_concat(&params.freqs, wpa_s->conf->freq_list);
 	}
 
+	/* Use current associated channel? */
+	if (wpa_s->conf->scan_cur_freq && !params.freqs) {
+		int freq = shared_vif_oper_freq(wpa_s);
+		if (freq > 0) {
+			wpa_dbg(wpa_s, MSG_DEBUG, "Scan only the current "
+				"operating channel (%d MHz) since "
+				"scan_cur_freq is enabled", freq);
+			params.freqs = os_zalloc(sizeof(int) * 2);
+			if (params.freqs)
+				params.freqs[0] = freq;
+		}
+	}
+
 	params.filter_ssids = wpa_supplicant_build_filter_ssids(
 		wpa_s->conf, &params.num_filter_ssids);
 	if (extra_ie) {
diff --git a/wpa_supplicant/systemd/wpa_supplicant-nl80211.service.arg.in b/wpa_supplicant/systemd/wpa_supplicant-nl80211.service.arg.in
index 76aba12..bfdee25 100644
--- a/wpa_supplicant/systemd/wpa_supplicant-nl80211.service.arg.in
+++ b/wpa_supplicant/systemd/wpa_supplicant-nl80211.service.arg.in
@@ -10,4 +10,4 @@
 ExecStart=@BINDIR@/wpa_supplicant -c/etc/wpa_supplicant/wpa_supplicant-nl80211-%I.conf -Dnl80211 -i%I
 
 [Install]
-Alias=multi-user.target.wants/wpa_supplicant-nl80211@wlan0.service
+Alias=multi-user.target.wants/wpa_supplicant-nl80211@%i.service
diff --git a/wpa_supplicant/systemd/wpa_supplicant-wired.service.arg.in b/wpa_supplicant/systemd/wpa_supplicant-wired.service.arg.in
index ff384ae..20ba0ad 100644
--- a/wpa_supplicant/systemd/wpa_supplicant-wired.service.arg.in
+++ b/wpa_supplicant/systemd/wpa_supplicant-wired.service.arg.in
@@ -10,4 +10,4 @@
 ExecStart=@BINDIR@/wpa_supplicant -c/etc/wpa_supplicant/wpa_supplicant-wired-%I.conf -Dwired -i%I
 
 [Install]
-Alias=multi-user.target.wants/wpa_supplicant-wired@wlan0.service
+Alias=multi-user.target.wants/wpa_supplicant-wired@%i.service
diff --git a/wpa_supplicant/systemd/wpa_supplicant.service.arg.in b/wpa_supplicant/systemd/wpa_supplicant.service.arg.in
index c215567..10e62bc 100644
--- a/wpa_supplicant/systemd/wpa_supplicant.service.arg.in
+++ b/wpa_supplicant/systemd/wpa_supplicant.service.arg.in
@@ -10,4 +10,4 @@
 ExecStart=@BINDIR@/wpa_supplicant -c/etc/wpa_supplicant/wpa_supplicant-%I.conf -i%I
 
 [Install]
-Alias=multi-user.target.wants/wpa_supplicant@wlan0.service
+Alias=multi-user.target.wants/wpa_supplicant@%i.service
diff --git a/wpa_supplicant/wpa_supplicant.c b/wpa_supplicant/wpa_supplicant.c
index c807888..dbdaf19 100644
--- a/wpa_supplicant/wpa_supplicant.c
+++ b/wpa_supplicant/wpa_supplicant.c
@@ -3039,6 +3039,7 @@
 static void wpa_supplicant_deinit_iface(struct wpa_supplicant *wpa_s,
 					int notify, int terminate)
 {
+	wpa_s->disconnected = 1;
 	if (wpa_s->drv_priv) {
 		wpa_supplicant_deauthenticate(wpa_s,
 					      WLAN_REASON_DEAUTH_LEAVING);
@@ -3546,6 +3547,17 @@
 	 */
 	eloop_cancel_timeout(wpa_supplicant_timeout, wpa_s, NULL);
 
+	if (wpa_s->disconnected) {
+		/*
+		 * There is no point in blacklisting the AP if this event is
+		 * generated based on local request to disconnect.
+		 */
+		wpa_dbg(wpa_s, MSG_DEBUG, "Ignore connection failure "
+			"indication since interface has been put into "
+			"disconnected state");
+		return;
+	}
+
 	/*
 	 * Add the failed BSSID into the blacklist and speed up next scan
 	 * attempt if there could be other APs that could accept association.
@@ -3864,3 +3876,42 @@
 	if (wpa_supplicant_fast_associate(wpa_s) != 1)
 		wpa_supplicant_req_scan(wpa_s, 0, 0);
 }
+
+
+/**
+ * wpas_wpa_is_in_progress - Check whether a connection is in progress
+ * @wpa_s: Pointer to wpa_supplicant data
+ *
+ * This function is to check if the wpa state is in beginning of the connection
+ * during 4-way handshake or group key handshake with WPA on any shared
+ * interface.
+ */
+int wpas_wpa_is_in_progress(struct wpa_supplicant *wpa_s)
+{
+	const char *rn, *rn2;
+	struct wpa_supplicant *ifs;
+
+	if (!wpa_s->driver->get_radio_name)
+                return 0;
+
+	rn = wpa_s->driver->get_radio_name(wpa_s->drv_priv);
+	if (rn == NULL || rn[0] == '\0')
+		return 0;
+
+	for (ifs = wpa_s->global->ifaces; ifs; ifs = ifs->next) {
+		if (ifs == wpa_s || !ifs->driver->get_radio_name)
+			continue;
+
+		rn2 = ifs->driver->get_radio_name(ifs->drv_priv);
+		if (!rn2 || os_strcmp(rn, rn2) != 0)
+			continue;
+		if (ifs->wpa_state >= WPA_AUTHENTICATING &&
+		    ifs->wpa_state != WPA_COMPLETED) {
+			wpa_dbg(wpa_s, MSG_DEBUG, "Connection is in progress "
+				"on interface %s - defer scan", ifs->ifname);
+			return 1;
+		}
+	}
+
+	return 0;
+}
diff --git a/wpa_supplicant/wpa_supplicant.conf b/wpa_supplicant/wpa_supplicant.conf
index 87dd397..8e21a3a 100644
--- a/wpa_supplicant/wpa_supplicant.conf
+++ b/wpa_supplicant/wpa_supplicant.conf
@@ -310,6 +310,10 @@
 # allowing it to update the internal BSS table.
 #ignore_old_scan_res=0
 
+# scan_cur_freq: Whether to scan only the current frequency
+# 0:  Scan all available frequencies. (Default)
+# 1:  Scan current operating frequency if another VIF on the same radio
+#     is already associated.
 
 # Interworking (IEEE 802.11u)
 
diff --git a/wpa_supplicant/wpa_supplicant_i.h b/wpa_supplicant/wpa_supplicant_i.h
index c53421d..7559a75 100644
--- a/wpa_supplicant/wpa_supplicant_i.h
+++ b/wpa_supplicant/wpa_supplicant_i.h
@@ -782,6 +782,7 @@
 		    size_t ssid_len);
 void wpas_request_connection(struct wpa_supplicant *wpa_s);
 int wpas_build_ext_capab(struct wpa_supplicant *wpa_s, u8 *buf);
+int wpas_wpa_is_in_progress(struct wpa_supplicant *wpa_s);
 
 /**
  * wpa_supplicant_ctrl_iface_ctrl_rsp_handle - Handle a control response