cilium 1.9 已支持 flow 计数

api/v1/flow/flow.proto

// Aggregate contains flow aggregation counters
message Aggregate {
    // ingress_flow_count is the count of flows in the ingress direction
    uint32 ingress_flow_count = 1;

    // egress_flow_count is the count of flows in the egress direction
    uint32 egress_flow_count = 2;

    // unknown_direction_flow_count is the count of flows with unknown traffic direction
    uint32 unknown_direction_flow_count = 3;