You can now use capture filters to generate flow logs only for traffic you specify:

• Enable flow logs for all VNICs in a VCN or subnet, or target specific instances, network load balancers, or resource VNICs as enablement points.
• Specify the percentage of network flows to capture (sampling rate).
• Create up to 10 rules to include or exclude traffic based on criteria you specify.  For example, you can include or exclude traffic based on source or destination IP address or CIDR block, IP protocol, or whether it is part of ingress or egress traffic.

For more information, see Overview of VCN Flow Logs.

This feature is not currently available in the following regions:

• ca-toronto-1
• ca-montreal-1