关闭几个dns的解析，然后杀进程，就是每次都得手动

# block mqtt
chmod -x /histor/bin/emclient
killall  emclient

# block proxy
# msgType=110 to api.hiksemi.cn//gateway/api
# got proxyDataHost/proxyFilePort/proxyServerPort
chmod -x /histor/bin/network/proxyDaemon
killall proxyDaemon