We have a number of machines on IaaS, but around 25% - 50% of them are unable to route traffic to our on-premise network this morning.
They are all on the same virtual network and id almost all cases they are also in the same subnet as machines that are working. Has anyone seen this before or is experiencing anything similar?
Routing between the subnets in the virtual network appears to be fine, its just traffic through the VPN gateway. I can confirm that no configuration changes have been made or any firewall issues.