Dear colleagues, unfortunately DoS amplification attacks are still with us. There are indications that the damage caused by such attacks is increasing; certainly their visibility has increased recently. The only way to effectively stop amplification attacks is to prevent IP source address spoofing. Without spoofing there is no amplification and no obfuscation of the real source of DoS attack traffic. RIPE needs to encourage operators to prevent IP source address spoofing. Hence I propose to establish an "IP Spoofing" task force. I include a document outlining the motivation for the task force, a proposed charter and a proposed time-line; it also has a refeerence list that can be used to as a starting point to learn more. In order to collect suggestions and gather people working on the task force, I propose a BoF session at RIPE-52. Tuesday around 17:15 after the plenary and before the social is a good time. If you are interested I will see you there. If you would like to help but you will not be in Istanbul, please contact me off-list with specifics of what you can contribute. I am specifically looking for people from equipment vendors who can provide how-to documents and network operators who can relate deployment experiences. Daniel "Es gibt nichts Gutes, ausser man tut es." - Erich Kaestner