Basically what happens is the Ooma hub will all of a sudden have an IP address of 0.0.0.0 on the modem interface. This could very well be caused by an ISP issue.
After resetting my cable modem and then resetting the Ooma hub, it still has the 0.0.0.0 address. I double checked to make sure DHCP was working from my ISP by connecting it directly to one of my PCs and did get an IP address after releasing/renew.
My main question/suggestion is: It would be nice to have DHCP release/renew option on the Ooma hub network settings. I was not aware of the holding down the Ooma red tab while plugging in the unit to reset everything. I really would rather not have to re-configure everything if this happens again - when it seems a simple DHCP release/renew would have solved the problem.
Is there any simple way to get the Ooma hub to do a DHCP release/renew?
My previous router - Netgear, would lose its IP lease once in a while and have to be re-booted. I haven't had that problem since installing the Ooma hub after the modem and before the router.
It would be nice to have a "DHCP Release/Renew" option under Network settings on the Ooma hub. It probably wouldn't be that difficult to implement if development was ok with the idea.