Gracy the Receiver starts running towards George the Emitter with speed v:

http://youtube.com/watch?v=bg7O4rtlwEE

The speed of light as measured by Gracy the Receiver shifts from c to c'=c+v, in violation of Einstein's relativity.

The frequency Gracy the Receiver measures shifts from f=c/λ to f'=c'/λ.

The wavelength is INVARIABLE.

It can be shown that the wavelength is INVARIABLE in two more cases:

1. When George the Emitter, not Gracy the Receiver, is running.

2. When light is falling in a gravitational field.

Future fundamental physics will be the result of a paradigm shift replacing Einstein's nonsensical axiom

"Speed of light is invariable"

with the correct axiom

"Wavelength of light is invariable".

So the formula

(frequency) = (speed of light)/(wavelength)

will mean that any frequency shift entails (is caused by) a speed-of-light shift.

Pentcho Valev