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\section{Steady vs Eruptive Massloss}  The mass loss rates during the last few hundred years of evolution of some core collapse supernova progenitors seem to violate the maximum values allowed by line-driven winds ($\odot{M}\sim 10^-4$M_$\odot$yr$^-1$, ($\odot{M} \sim 10^-4$M$_\odot$yr$^-1$,  Smith \& Owocki 2006). Intense stellar mass loss during the final years before core collapse could be caused by   internal gravity waves excited by core convection during Oxygen and Neon fusion (Quataert \& Shiode 2012, 2014).