單項選擇題

如圖所示,RTA已經(jīng)配置了各接口地址并使能了NAT-PT功能?,F(xiàn)要求在RTA上配置一對一的靜態(tài)NAT-PT映射。則哪一個配置是正確的?()

A.[RTA]natptv6boundstatic1::21.1.1.2RTA]natptv4boundstatic1.1.1.31::3
B.[RTA]natptv6boundstatic1::21.1.1.3RTA]natptv4boundstatic1.1.1.21::3
C.[RTA]natptv6boundstatic1::21.1.1.3RTA]natptv4boundstatic1.1.1.31::3
D.[RTA]natptv6boundstatic1::31.1.1.3RTA]natptv4boundstatic1.1.1.21::2

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