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Non-Terminal NAPTRs (NTNs) - 1 NTNs add code complexity and so are a difficult for “small footprint” devices, and many existing clients don’t support them, so beware (but if you do want to use them, and you know that the clients will support them … ) “Non-terminal” loops can exist, must be detected/handled No “chain” of NTNs should be more than 5 “deep”, so traversing 5 zones automatically may be considered as a potential loop If you do detect a loop, do something about it! Abort processing the NTN that would cause a loop and continue with any remaining NAPTRs in the referring zone |