HNA - message processing

All HNA data received is registered in the host and network association set. This information repository is kept ``fresh'' in the same manner as the repositories mentioned in chapter 3. This means that entries are deleted as soon as the validity time expires.

Entries are registered with the following fields:

• Gateway - The main address of the node announcing itself as gateway. This is the originator address of the HNA message.

• Network - The network the gateway can route traffic to.

• Netmask - The netmask of the network address describing the prefix length.

• Vtime - The timestamp specifying for how long this entry is valid.

When a HNA message is received, the HNA data set is updated either by updating an existing entry, or if no entry exists for the gateway address, creating a new entry.