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In accordance with RFC 6775, section 5.2 an NCE should be set STALE when an ARO renews the address registration for the address: > The routers SHOULD NOT garbage-collect Registered NCEs (see > Section 3.4), since they need to retain them until the Registration > Lifetime expires. Similarly, if NUD on the router determines that > the host is UNREACHABLE (based on the logic in [RFC4861]), the NCE > SHOULD NOT be deleted but rather retained until the Registration > Lifetime expires. A renewed ARO should mark the cache entry as > STALE. Thus, for 6LoWPAN routers, the Neighbor Cache doesn't behave > like a cache. Instead, it behaves as a registry of all the host > addresses that are attached to the router. |
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| application_layer | ||
| ble | ||
| credman | ||
| crosslayer | ||
| gnrc | ||
| link_layer | ||
| netdev_test | ||
| netif | ||
| network_layer | ||
| routing | ||
| sock | ||
| transport_layer | ||
| doc.txt | ||
| Kconfig | ||