~增加ecs优化功能

scripts/libs/get_ecsip.sh

@@ -0,0 +1,17 @@
+
+get_ecs_address() {
+    ip=$(uci get network.wan.dns 2>/dev/null)
+    [ -n "$ip" ] && return
+    for f in /tmp/resolv.conf.auto /tmp/resolv.conf /tmp/resolv.conf.d/resolv.conf.auto; do
+        [ -f "$f" ] || continue
+        ip=$(grep -A2 "^# Interface wan" "$f" | grep nameserver | awk '{printf "%s ", $2}')
+        [ -n "$ip" ] && return
+    done
+	. "$CRASHDIR"/libs/web_get_lite.sh
+	for web in http://members.3322.org/dyndns/getip http://4.ipw.cn http://ipinfo.io/ip; do
+		ip=$(web_get_lite "$web" 0)
+		[ -n "$ip" ] && return
+	done
+}
+get_ecs_address
+[ -n "$ip" ] && ecs_address="${ip%.*}.0/24"