The draft adds DCO msg which allows route invalidation by the common ancestor node. The DCO message is generated by the ancestor node in response to DAO with I-flag (invalidate previous route flag) set in context to the corresponding target. The I-flag is used as a mechanism so that the target is in-charge of its own invalidation. Having said that, the ancestor node has all the state information needed to generate the DCO unilaterally. Should this be allowed?
| Initial | Usual DCO | Unilateral DCO |
|---|---|---|
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