From upstream "
The router in NY1 will be power cycled to fully resolve firmware related issues identified in a prior network event. While the maintenance window is set for 5 hours, we only expect roughly 15 - 20 minutes of network unavailability during this time. Additional time is taken into account in case of unexpected issues. We recommend planning for the entire maintenance window, again, we only expect 15 - 20 minutes of network unavailability. "

VPS instances will be inaccessible.