Our ZD1200 has been working fine for years, all of a sudden since yesterday it loses it's connection to the network. The status light is solid green and wan port looks like it's lit up flashing green. Firmware is 184.108.40.206 build 33.
I've tried restoring it to factory default and then uploading our configuration. It always works when powering up, but becomes unreachable by browser (by IP address) after a few minutes.