The answer to this task is just wrong. It's wrong for three reasons:
1. The solution uses PBR without specifying that it is possible to use PBR in the question (recall that the Do's & Don'ts at the start of the lab stated PBR cannot be used)
2. There are changes to satisfy the second part of the question, i.e. that traffic from R5 to R6 goes via R4.
3. There's no verification step in the answer
IE, please correct.