Veld Flower Mystery 3

I found this little pea flower growing in dry, stony soil at Kwandwe Private Game Reserve, in semi-karoid scrub. Very scandent, it was growing within and over another sub-shrub. The pods are particularly attractive, turning pinkish as they mature. I have only seen pods like this on Lessertia (Sutherlandia) frutescens, so it may be related.