At 21:17 we noticed a management card flap at our second router at NZS.

We are currently investigating into this as our BGP are loading out again.

Update 01:10:
We continue to see the management cards swap (both the active / standby) on this router at random intervals. Router 1 is carrying all the customer load at the moment while we debug this issue.

Update 10:30:
We have replaced the management cards of R2 and monitored the situation. After replacing the management cards, we have no longer seen any swapping between active/standby card.

We expect the issue is resolved however we still continue to monitor the situation during the day.