network-duplicate

Duplicates packets at the specified percentage using Linux tc netem.

Target kind: Pod
Implementation: Daemon (ExecNetworkChaos with action: duplicate)
Rollback: Yes — removes tc netem rules

Parameters

Name	Type	Required	Default	Description
percent	string	Yes	—	Percentage of packets to duplicate (0-100)

Example

apiVersion: chaos.chaosplane.io/v1alpha1
kind: ChaosExperiment
metadata:
  name: network-duplicate-example
  namespace: default
spec:
  target:
    kind: Pod
    namespace: default
    labelSelector:
      matchLabels:
        app: message-consumer
  action:
    type: network-duplicate
    parameters:
      percent: "20"
  duration: 30s
  rollback:
    enabled: true

Rollback behavior

Removes the tc netem qdisc from the pod's network interface.

Implementation notes

Uses tc qdisc add dev eth0 root netem duplicate PERCENT%. Duplicate packets test idempotency, deduplication logic, and protocol handling of duplicate frames. TCP handles duplicates transparently, but application-level protocols may not.