Figured out that my gigabit PCI card, a D-Link DGE-528T, has a RealTek
8169S chipset.

So, there should be built in support for it in Nevada_27. So I run

# ifconfig -a plumb
# ifconfig rge0 192.168.1.1 up

Yes!!! It's up running.

How wonderful isn't Google for finding stuff like this. Here's where I
got my answer:
http://blogs.sun.com/dp and
http://www.opensolaris.org/jive/thre...=3328&tstart=0

BTW, I got the PCI card when i bought a 5 port Gbit switch, all for
~$70
That's really cheap beeing in Sweden...