How
accurate is this??
#1: A default/static route is used to reach
networks outside of your local broadcast domain. So if you disable your
default route (on your computer, try it), you'll still be able to get to
everything on 172.x.y.0/22. Meaning you can reach everything from
172.16.x.y to 172.16.a.b, reserving 172.16.x.0 for your network and 172.16.a.255
for your broadcast.
