You arc asked to proud a design proposal to secure a service provider’s network against IP spoofing As part of your design, you must ensure that only traffic sourced from the same subnet is followed on the customer-facing interfaces. Which solution will satisfy this requirement?
A. BGP with source of origin community
B. unicast RPF with strict mode
C. unicast RPF with loose mode
D. BGP labeled-unicast using the resolve-vpn option
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