单项选择题

AmachinehasjustbeeninstalledwithAIX,andnosystemparamete……

A machine has just been installed with AIX, and no system parameters have been changed. In order to enable routing function, which of the following "no" options should be changed?（）

A. set bcastping to 1
B. set ipforwarding to 1
C. set rfc1323 to 1
D. set directed_broadcast to 1

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