other challenges in Internet measurement (4) 


discovering pervasive hidden bugs
any modeling or analylsis must also handle the impact of this huge component of traffic

how does measurement affect/support security goals
infer bgp, firewall, and virus spread behavior
how do you get networks to share security-related information 
protection of measurement infrastructure from security compromises

measurement specific to optical, wireless and sensor networks
especially assessment of new application domains (for wireless/sensor)

encouragement of strategic measurement in new networks
based on what we learned from what we did wrong in old networks