Are we really this helpless? (Re: isprime DOS in progress)

It would seem that as ISPs implement DPI and protocol-specific traffic
shaping, they damage the arguments that they can make claiming they
have "common carrier" status with the inherent immunities that status
provides. I can hear the argument now: if an ISP can throttle
BitTorrent (or whatever) for specific nodes, why can't they also limit
the source addresses of packets coming from those nodes?

  They can and should. I suspect many of them do as they
  usually apply these filters to home networks.

  BCP 38 is ~10 years old now. It should have been factored
  into the purchasing decision of all the current equipement.
  If it wasn't then the operator was negligent.


BCP 38 isn't a license, it's a technique.