The amusing thing about that is that broadcom, not Cisco, was the culprit in the original WRT54G GPL violation. Cisco, of course, were legally liable and should have checked that the code they obtained was not encumbered - although the usual way to do that is to specify contractually that your vendor will do the checking. It was a huge issue for them that they had tripped a customer who provided a significant fraction of their revenue into legal difficulties. I suspect that to this day, a big reason that parts of broadcom are reluctant to open-source stuff is because certain executives are still angry about the experience.