Invalidating cached flow information in a cloud infrastructure

A method comprising:

• storing, by a network virtualization device, flow information usable by a virtual network interface card for traffic associated with a virtual network, the network virtualization device hosting the virtual network interface card and connected with a substrate network, the virtual network interface card associated with a compute instance;
• storing, by the network virtualization device, version information about the flow information;
• determining, by the network virtualization device, that the flow information is outdated based on communication with a control plane about the version information;
• receiving, by the network virtualization device from the control plane or a network interface service, an update of the flow information, the network interface service hosted on a set of servers connected with the substrate network, the network interface service storing configuration information about a configuration of the virtual network and version information about the configuration information, the update based on the configuration information and version information;
• and
• updating, by the network virtualization device, the flow information based on the update.

One or more non-transitory computer-readable instructions that, upon execution on a network virtualization device, cause the network virtualization device to perform operations comprising:

• storing flow information usable by a virtual network interface card for traffic associated with a virtual network, the network virtualization device hosting the virtual network interface card and connected with a substrate network, the virtual network interface card associated with a compute instance;
• storing version information about the flow information;
• determining that the flow information is outdated based on communication with a control plane about the version information;
• receiving, from the control plane or-a network interface service, update of the flow information, the network interface service hosted on a set of servers connected with the substrate network, the network interface service storing configuration information about a configuration of the virtual network and version information about the configuration information, the update based on the configuration information and version information;
• and
• updating the flow information based on the update.