@terziyski Thanks for your response. Looks you are right that the problem occurs when main router restarts. Setting a static LAN IP 192.168.1.254 does not help much here. If you comeup with any other...

I have one TPLINK router Archer C6. I am trying to use it as extender. I have assigned a static IP to it to be in the family network. It works OK most of the time. But sometimes (for example, the...