diff --git a/src/radius/radius_das.c b/src/radius/radius_das.c
index b2a2773..9655f4c 100644
--- a/src/radius/radius_das.c
+++ b/src/radius/radius_das.c
@@ -38,11 +38,16 @@
 	struct radius_msg *reply;
 	u8 allowed[] = {
 		RADIUS_ATTR_USER_NAME,
+		RADIUS_ATTR_NAS_IP_ADDRESS,
 		RADIUS_ATTR_CALLING_STATION_ID,
+		RADIUS_ATTR_NAS_IDENTIFIER,
 		RADIUS_ATTR_ACCT_SESSION_ID,
 		RADIUS_ATTR_EVENT_TIMESTAMP,
 		RADIUS_ATTR_MESSAGE_AUTHENTICATOR,
 		RADIUS_ATTR_CHARGEABLE_USER_IDENTITY,
+#ifdef CONFIG_IPV6
+		RADIUS_ATTR_NAS_IPV6_ADDRESS,
+#endif /* CONFIG_IPV6 */
 		0
 	};
 	int error = 405;
@@ -67,6 +72,36 @@
 
 	os_memset(&attrs, 0, sizeof(attrs));
 
+	if (radius_msg_get_attr_ptr(msg, RADIUS_ATTR_NAS_IP_ADDRESS,
+				    &buf, &len, NULL) == 0) {
+		if (len != 4) {
+			wpa_printf(MSG_INFO, "DAS: Invalid NAS-IP-Address from %s:%d",
+				   abuf, from_port);
+			error = 407;
+			goto fail;
+		}
+		attrs.nas_ip_addr = buf;
+	}
+
+#ifdef CONFIG_IPV6
+	if (radius_msg_get_attr_ptr(msg, RADIUS_ATTR_NAS_IPV6_ADDRESS,
+				    &buf, &len, NULL) == 0) {
+		if (len != 16) {
+			wpa_printf(MSG_INFO, "DAS: Invalid NAS-IPv6-Address from %s:%d",
+				   abuf, from_port);
+			error = 407;
+			goto fail;
+		}
+		attrs.nas_ipv6_addr = buf;
+	}
+#endif /* CONFIG_IPV6 */
+
+	if (radius_msg_get_attr_ptr(msg, RADIUS_ATTR_NAS_IDENTIFIER,
+				    &buf, &len, NULL) == 0) {
+		attrs.nas_identifier = buf;
+		attrs.nas_identifier_len = len;
+	}
+
 	if (radius_msg_get_attr_ptr(msg, RADIUS_ATTR_CALLING_STATION_ID,
 				    &buf, &len, NULL) == 0) {
 		if (len >= sizeof(tmp))
diff --git a/src/radius/radius_das.h b/src/radius/radius_das.h
index 738b18b..e3ed540 100644
--- a/src/radius/radius_das.h
+++ b/src/radius/radius_das.h
@@ -18,6 +18,13 @@
 };
 
 struct radius_das_attrs {
+	/* NAS identification attributes */
+	const u8 *nas_ip_addr;
+	const u8 *nas_identifier;
+	size_t nas_identifier_len;
+	const u8 *nas_ipv6_addr;
+
+	/* Session identification attributes */
 	const u8 *sta_addr;
 	const u8 *user_name;
 	size_t user_name_len;