adjustments to tcpdump interface for tcpdump 4.6.0
test case: daoack causes immediate dio, daoack causes new dao
fixup! adjustments to tcpdump interface for tcpdump 4.6.0
added device names and mac addresses
daoack causes immediate dio, daoack causes new dao
distinguish between nodes which announce things, and the prefixes that the announce
use installed bit properly on prefix_node to see if routing is necessary
updated documentation on test network, added node N