有一些服務，需要動態IP，所以我們用重啓路由器的方法實現。人工重啓不可選，用定時腳本執行即可。貼代碼，每種路由器，提示不一樣。需要路由器有telnet功能才行。
#!/usr/bin/env python
# -*- coding: utf-8 -*-
import telnetlib
HOST = "192.168.1.1"
USER = "admin"
PASS = "admin"
router = telnetlib.Telnet(HOST)
router.set_debuglevel(2)
router.read_until("Username:", 12)
router.write(USER + "\r\n")
router.read_until("Password:", 12)
router.write(PASS + "\r\n")
router.read_until("TP-LINK > ", 12)
router.write("enable\r\n")
router.read_until("Enter password: ", 12)
router.write(PASS + "\r\n")
router.read_until("TP-LINK # ", 12)
router.write("sys reboot\r\n")
router.read_until("Continue?", 12)
router.write("Y\r\n")
router.close()
print "Done"