Nevertheless, this weakness is theoretical and unlikely to be turned into an practical attack. If the protocol relies on its fields, it may be the base of an attack. To make it smaller will cause the authentication to fail. We think it can't be used in an attack. The IP layer uses it to accept or reject the packets.
Attacks Combining the exposed weaknesses, it is possible to perform efficient attacks.
In this case, the DoS doesn't last long. We present 2 attacks able to break it using packet replay and ip address spoofing and how to use them on different types of links. May 2001 the real source, so the destination ignores the real packets until they reach a higher sequence number. This attack has limits on the sequence numbers but works even if the neighbor isn't identified by its ip address. This attack requires the neighbor to be identified by its ip address but it is independent of the sequence numbers.