illumos gate

The way that bge does its mac addresses initailization and management isn't quite correct. When updates for the 5719/5720 was done it disabled the use of the MAC features for using rings and groups and restored the old unicast mac address setting. The way that it did this was that it set all for receive address registers and set the tracking state to indicate that they were used during initialization.

However, when the unicast entry point was called, it used the rings mac address related functions. However, it thought all of the unicast addresses were available, but they weren't actually because that was tracked in a different way. These basically ended up leading us to walk over the array of mac addresses and actually end up dereferencing beyond the end of an array of mac addresses. While there were ASSERTS there, they weren't found until testing on a debug build for 12450.