Hello,

This limit must not be avoided. But, fix looking up to what the kernel support.

In addition, for Segment Routing, there is a new draft (draft-ietf-ospf-segment-routing-msd-05.txt) that could be used to advertise the Maximum Stack Depth. It is on my TODO list for OSPF Segment Routing support in FRR.

Regards

Olivier

By the way, kernel 4.12 is already available: (https://cdn.kernel.org/pub/linux/kernel/v4.x/linux-4.12.tar.xz)
In this kernel, according to the developers, the number of MPLS tags on the stack is 30.

Therefore, I suggest that this limit in Zebra should be avoided.

https://github.com/FRRouting/frr/issues/776

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