  We study curved and flat BPS-domain walls in 5D, N=4 gauged supergravity and
show that their effective dynamics along the flow is described by a generalized
form of "fake supergravity". This generalizes previous work in N=2 supergravity
and might hint towards a universal behavior of gauged supergravity theories in
supersymmetric domain wall backgrounds. We show that BPS-domain walls in 5D,
N=4 supergravity can never be curved if they are supported by the supergravity
scalar only. Furthermore, a purely Abelian gauge group or a purely semisimple
gauge group can never lead to a curved domain wall, and the flat walls for
these gaugings always exhibit a runaway behavior.
