This happens sometimes every few minutes and sometimes can work for long periods of time without failing.
What I'm seeing in the diagnostics of my TD-W9970 is a failure in pinging the default gateway.
After disconnecting/connecting in the WAN settings page, internet comes back.
What I'm seeing in the diagnostics of my TD-W9970 is a failure in pinging the default gateway.
After disconnecting/connecting in the WAN settings page, internet comes back.