When using OnLive with the IPS feature of the RVS4000 enabled, I receive many "DDOS_TYPE_UDP_FLOOD" messages in my IPS log.
I can't tell if this is a false positive or what but I can not use OnLive when the IPS feature is enabled because of all the skipping (I attribute to IPS blocking).
If you are just getting these alerts whenever running OnLive, it most likely is a false positive. The IPS module
might be detection too many UDP packets at once as an attack on the router and stopping the traffic, resulting in stopping OnLive.