We've also had the IPC6023 message since early December (having lost the basic sky and sky sports channels). It's the first opportunity I've had to take a look at the problem. How many times should you have to reset the router!!
Currently looking at the box / screen which is wired directly to the router (in order to eliminate the powerline adaptors) and the IPC6023 message is there. Can see that the software for the box was last updated on 1st December, so wonder whether this is the cause of the issue?
Will look to raise my own post in order for a OCE assistance, but will follow yours with interest brianhillard.