vPC Loop Prevention

Just want some clarification on the Loop Prevention. If you have a VPC domain , and 2 servers boh dual-homed to the 5Ks. If server 1 pings server 2, and the unknown unicast frame travels to 5K1 , I know it will forward over the peer-link to 5K2. At the point, I know will not forward out 5K2 to Server 1's member port.  My question is will it also not forward from 5K2 to Servers 2's member port? I'm thinking the only way server 2 will get that frame is from the member port that connects it to 5K1?



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