【单选题】
A <{p}>数据转发的入接口<{/p}><{p}><{strong}><{/strong}><{/p}><{p}><{span}><{/span}><{/p}><{p}><{span}><{strong}><{/strong}><{/span}><{/p}><{p}><{strong}><{/strong}><{/p}>
B <{p}>数据转发的出接口<{/p}><{p}><{span}><{/span}><{/p}><{p}><{span}><{/span}><{/p}><{p}><{span}><{/span}><{/p}><{p}><{strong}><{/strong}><{/p}><{p}><{span}><{/span}><{/p}><{p}><{span}><{strong}><{/strong}><{/span}><{/p}>
C <{p}>全局配置<{/p}><{p}><{span}><{/span}><{/p}><{p}><{span}><{/span}><{/p}><{p}><{span}><{/span}><{/p}><{p}><{span}><{strong}><{/strong}><{/span}><{/p}><{p}><{span}><{/span}><{/p}><{p}><{/p}>
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