lowbyte, I agree that 2.6 is 32 bit. However I disagree with every other statement you made. The part about 32 bit being "too slow" is especially odd. "32 bit" is not a measure of speed. Here is a link to
a description of patch 106764-09 which says it is "Sun Gigabit Ethernet 2.0: Patch for Solaris 2.6 ge driver". That patch is dated 2002. But I present the link only as proof of the existence of a solaris 2.6 ge driver, I don't know where to download it.