EIGRP task 9.14 says to not use passive-interface as a way to limit routes being propagated via R4 to R2.
Why didn't they (passive-interface commands) get removed in the solution? Also, I really liked this task, because you have to read very carefully. I initially removed the "passive-interface default" and added a bogus MD5 authentication on R4's FA 0/0 and FA 0/1. However, after reading the solution I realized that the solution was better because the task did not say to limit expediencies but to limit propagation of routes IF an EIGRP peer turned up on FA 0/0 or FA 0/1. I need to really read these tasks more critically. Anyhow thanks for the great chapter on EIGRP.
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