  We revisit non-Abelian T-duality for non-semisimple groups, where it is
well-known that a mixed gravitational-gauge anomaly leads to $\sigma$-models
that are scale, but not Weyl-invariant. Taking into account the variation of a
non-local anomalous term in the T-dual $\sigma$-model of Elitzer, Giveon,
Rabinovici, Schwimmer \& Veneziano, we show that the equations of motion of
generalized supergravity follow from the $\sigma$-model once the Killing vector
$I$ is identified with the trace of the structure constants. As a result,
non-Abelian T-duals with respect to non-semisimple groups are solutions to
generalized supergravity. We illustrate our findings with Bianchi spacetimes.
