I've a Humax HDR box running custom firmware. It's configured to power down from 0230 to 0400 every morning to allow it to housekeep. I also have a cron job rsyncing the Videos directory to a NAS DLNA server on my network at 0500 every day. It's almost perfect.
There is one problem left to fix, and that is that the network connection periodically, and with no particular pattern, goes down; usually once a day. This is fixed by going into the IP config menu using the remote and simply applying the same settings again.
The network connection is via a static IP address which connects to my network over a wireless bridge (should be irrelevant).
Why is the network interface going down? How can I fix it? It's as though something issues an "ifconfig down" on the ethernet interface and that re-applying the settings in the UI issues an "ifconfig up".
Where should I start to diagnose this? Is there some kind of network watchdog which drops the interface if it senses intermittent connectivity?