JangWo

I have 3 providers, priority 1-2-3, the electricity turns off, the Keenetic switches to provider 3, then the electricity turns on, the Keenetic switches to 1, but the forwarding ports remain open on provider 3, and are not accessible from the internet on provider 1, although the internet at the same time goes through provider 1, and if I ping provider 1 from the internet, the Keenetic responds from provider 3. In my case helps to turn provider 3 off and on, then the ports become available on provider 1.