These factors all motivate the need for Signposts, our network
service that enables user-centric control of connectivity
in the edge network, both within a personal cloud of devices
and across to the devices of others. Such a service must account
for the need to operate when disconnected from the
global Internet, whether due to intermittent connectivity or
the interposition of middleboxes that break the all-pairs connectivity
model of the traditional Internet.
latency, as well as energy and financial costs [6, 2].