Tradfri binding loses connection after Power failure / gateway reboot

2.5.0-SNAPSHOT Build #1482

My Trådfri Gateway lost all its pairings yesterday, possibly because I had to re-boot/power-cycle it in order to get it to connect to OH2. I had problems re-pairing lights and opted to replace it with a spare I had.

This new Gateway has the same issue with failing to connect after an OH2 restart.
I tried enabling more logs, but no more is showing.

openhab> log:set DEBUG org.openhab.binding.tradfri

When restarting the binding, this is the only WARN log:

2018-12-30 15:31:44.086 [WARN ] [iscovery.TradfriDiscoveryParticipant] - Discovered Tradfri gateway doesn't have an IP address: [ServiceInfoImpl@1501157832 name: 'gw-b072bfb31baf._coap._udp.local.' address: '(null):5684' status: 'NO DNS state: probing 1 task: null', has NO data, empty]

Same log entry on both success and failure.