[NetTransformEvent type="netfilter" bubbles=false cancelable=false eventPhase=2 header=null data=]
[NetTransformEvent type="netfilter" bubbles=false cancelable=false eventPhase=2 header=null data=]
[NetTransformEvent type="netfilter" bubbles=false cancelable=true eventPhase=2 header= data=null]
[NetTransformEvent type="netfilter" bubbles=false cancelable=true eventPhase=2 header= data=null]
[NetTransformEvent type="netfilter" bubbles=true cancelable=false eventPhase=2 header= data=]
event.header === a: true
event.data === b: true
[NetTransformEvent type="netfilter" bubbles=true cancelable=false eventPhase=2 header= data=]
clone.header === a: true
clone.data === b: true
