};

};

</source>

</source>

Therefore to choose an attribute you have to choose from the first 24 entries.e.g., packetbuf_set_attr(PACKETBUF_ATTR_RSSI,8) will set the RSSI attribute packet of the packet to be 8.  

Therefore to choose an attribute you have to choose from the first 24 entries.

For example, '''packetbuf_set_attr(PACKETBUF_ATTR_RSSI,8)''' will set the '''RSSI''' attribute packet of the packet to be 8.