Thank you for the reply. I figured out that this was an artifact of my attempt to add a second IP address to my LAN interface. Something I've never been able to get working but that's a subject for another thread.
In any case, ntp was attempting to attach to the bridge device which didn't work. Setting the ntp device to WAN fixed the problem.
In any case, ntp was attempting to attach to the bridge device which didn't work. Setting the ntp device to WAN fixed the problem.