Internet windmills needing data support

topology, topography
connectivity and stability 
routing
dynamics
performance 
diagnostics
bandwidth estimation
congestion avoidance
qos
workload characterization 
traffic flow analysis & modeling
security
anomaly detection
IP traceback
macroscopic level measurement
dos attacks 
dns system

middleware layers
feedback to system at various granularities (dynamics and trends)
new protocol development: routing, transport, IP
feedback to future operational measurement methodologies