A router was causing troubles in one of our hosting provider. They rebooted it, and it has caused a traffic downtime on part of our infrastructure. In the meantime, the redondant part was still online and reachable, so there was no service disruption.
Around 11:55, everything was fixed.
Below a copy of our hosting provider ticket :
We are facing an issue on this router causing DHCPACK packets to get blocked and thus preventing servers from rebooting correctly.
we will proceed with an upgrade and reboot of the router to fix this issue at 11:30 Paris Time This will cause a disruption of public transit for these servers of about 10 minutes