diff --git a/src/ap/ieee802_11.c b/src/ap/ieee802_11.c
index 52df06d29..404f243af 100644
--- a/src/ap/ieee802_11.c
+++ b/src/ap/ieee802_11.c
@@ -7102,6 +7102,54 @@ static size_t hostapd_eid_nr_db_len(struct hostapd_data *hapd,
 }
 
 
+static size_t hostapd_eid_rnr_iface_len(struct hostapd_data *hapd,
+					struct hostapd_data *reporting_hapd,
+					size_t *current_len)
+{
+	size_t total_len = 0, len = *current_len;
+	int tbtt_count = 0;
+	size_t i, start = 0;
+
+	while (start < hapd->iface->num_bss) {
+		if (!len ||
+		    len + RNR_TBTT_HEADER_LEN + RNR_TBTT_INFO_LEN > 255) {
+			len = RNR_HEADER_LEN;
+			total_len += RNR_HEADER_LEN;
+		}
+
+		len += RNR_TBTT_HEADER_LEN;
+		total_len += RNR_TBTT_HEADER_LEN;
+
+		for (i = start; i < hapd->iface->num_bss; i++) {
+			struct hostapd_data *bss = hapd->iface->bss[i];
+
+			if (!bss || !bss->conf || !bss->started)
+				continue;
+
+			if (bss == reporting_hapd ||
+			    bss->conf->ignore_broadcast_ssid)
+				continue;
+
+			if (len + RNR_TBTT_INFO_LEN > 255 ||
+			    tbtt_count >= RNR_TBTT_INFO_COUNT_MAX)
+				break;
+
+			len += RNR_TBTT_INFO_LEN;
+			total_len += RNR_TBTT_INFO_LEN;
+			tbtt_count++;
+		}
+		start = i;
+	}
+
+	if (!tbtt_count)
+		total_len = 0;
+	else
+		*current_len = len;
+
+	return total_len;
+}
+
+
 size_t hostapd_eid_rnr_len(struct hostapd_data *hapd, u32 type)
 {
 	size_t total_len = 0, current_len = 0;
@@ -7110,6 +7158,12 @@ size_t hostapd_eid_rnr_len(struct hostapd_data *hapd, u32 type)
 	case WLAN_FC_STYPE_BEACON:
 		if (hapd->conf->rnr)
 			total_len += hostapd_eid_nr_db_len(hapd, &current_len);
+		/* fallthrough */
+
+	case WLAN_FC_STYPE_PROBE_RESP:
+		if (hapd->conf->rnr && hapd->iface->num_bss > 1)
+			total_len += hostapd_eid_rnr_iface_len(hapd, hapd,
+							       &current_len);
 		break;
 
 	default:
@@ -7175,6 +7229,92 @@ static u8 * hostapd_eid_nr_db(struct hostapd_data *hapd, u8 *eid,
 }
 
 
+static u8 * hostapd_eid_rnr_iface(struct hostapd_data *hapd,
+				  struct hostapd_data *reporting_hapd,
+				  u8 *eid, size_t *current_len)
+{
+	struct hostapd_data *bss;
+	struct hostapd_iface *iface = hapd->iface;
+	size_t i, start = 0;
+	size_t len = *current_len;
+	u8 *tbtt_count_pos, *eid_start = eid, *size_offset = (eid - len) + 1;
+	u8 tbtt_count = 0, op_class, channel, bss_param;
+
+	if (!(iface->drv_flags & WPA_DRIVER_FLAGS_AP_CSA) || !iface->freq)
+		return eid;
+
+	if (ieee80211_freq_to_channel_ext(iface->freq,
+					  hapd->iconf->secondary_channel,
+					  hostapd_get_oper_chwidth(hapd->iconf),
+					  &op_class, &channel) ==
+	    NUM_HOSTAPD_MODES)
+		return eid;
+
+	while (start < iface->num_bss) {
+		if (!len ||
+		    len + RNR_TBTT_HEADER_LEN + RNR_TBTT_INFO_LEN > 255) {
+			eid_start = eid;
+			*eid++ = WLAN_EID_REDUCED_NEIGHBOR_REPORT;
+			size_offset = eid++;
+			len = RNR_HEADER_LEN;
+			tbtt_count = 0;
+		}
+
+		tbtt_count_pos = eid++;
+		*eid++ = RNR_TBTT_INFO_LEN;
+		*eid++ = op_class;
+		*eid++ = hapd->iconf->channel;
+		len += RNR_TBTT_HEADER_LEN;
+
+		for (i = start; i < iface->num_bss; i++) {
+			bss_param = 0;
+			bss = iface->bss[i];
+			if (!bss || !bss->conf || !bss->started)
+				continue;
+
+			if (bss == reporting_hapd ||
+			    bss->conf->ignore_broadcast_ssid)
+				continue;
+
+			if (len + RNR_TBTT_INFO_LEN > 255 ||
+			    tbtt_count >= RNR_TBTT_INFO_COUNT_MAX)
+				break;
+
+			*eid++ = RNR_NEIGHBOR_AP_OFFSET_UNKNOWN;
+			os_memcpy(eid, bss->conf->bssid, ETH_ALEN);
+			eid += ETH_ALEN;
+			os_memcpy(eid, &bss->conf->ssid.short_ssid, 4);
+			eid += 4;
+			if (bss->conf->ssid.short_ssid ==
+			    reporting_hapd->conf->ssid.short_ssid)
+				bss_param |= RNR_BSS_PARAM_SAME_SSID;
+
+			if (is_6ghz_op_class(hapd->iconf->op_class) &&
+			    bss->conf->unsol_bcast_probe_resp_interval)
+				bss_param |=
+					RNR_BSS_PARAM_UNSOLIC_PROBE_RESP_ACTIVE;
+
+			bss_param |= RNR_BSS_PARAM_CO_LOCATED;
+
+			*eid++ = bss_param;
+			*eid++ = RNR_20_MHZ_PSD_MAX_TXPOWER - 1;
+			len += RNR_TBTT_INFO_LEN;
+			tbtt_count += 1;
+		}
+
+		start = i;
+		*tbtt_count_pos = RNR_TBTT_INFO_COUNT(tbtt_count - 1);
+		*size_offset = (eid - size_offset) - 1;
+	}
+
+	if (tbtt_count == 0)
+		return eid_start;
+
+	*current_len = len;
+	return eid;
+}
+
+
 u8 * hostapd_eid_rnr(struct hostapd_data *hapd, u8 *eid, u32 type)
 {
 	u8 *eid_start = eid;
@@ -7184,6 +7324,12 @@ u8 * hostapd_eid_rnr(struct hostapd_data *hapd, u8 *eid, u32 type)
 	case WLAN_FC_STYPE_BEACON:
 		if (hapd->conf->rnr)
 			eid = hostapd_eid_nr_db(hapd, eid, &current_len);
+		/* fallthrough */
+
+	case WLAN_FC_STYPE_PROBE_RESP:
+		if (hapd->conf->rnr && hapd->iface->num_bss > 1)
+			eid = hostapd_eid_rnr_iface(hapd, hapd, eid,
+						    &current_len);
 		break;
 
 	default: