I am trying to troubleshoot random unexpected reboots of a Draytek 2960, every time it reboots I see the following message in the syslog: Restart policy route ping detection on pid xxxxx

I've been trying to troubleshoot this for a while now and the email tech support from Draytek UK is really slow, usually takes about a week to reply.

Initially I thought this may have been down to the Connection detection Mode setting in the WAN configuration which defaults to ARP, so seeing as this is a datacentre always-on connection I changed the mode from ARP to NONE which seemed to help for a few weeks, then it starts doing it again.

The router has been replaced twice, initially using the same saved configuration but the third time I rebuilt the configuration from scratch just in case there was any corruption in there, but it is still doing it.

Does anyone have any thoughts on what could be triggering this restart policy?