Traceroute is real - I should know, I was there with MPLS
Briefly

This reminds me of the classic 'design by committee' situation; we know how those generally turn out. But I believe this one was better than most in the end.
The debate we had around MPLS's support for traceroute was heated and vivid; my memories reflect the passion behind the innovations we sought.
MPLS serves as a direct progression from the design of Tag Switching, with similarities evident in the headers after its inception.
The claim in the traceroute article stating that MPLS cannot meet traceroute expectations is incorrect, which seems a notable oversight in its analysis.
Read at Theregister
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