[phoenix]

Originally Posted by disappearedng

pciconf yields

none3@pci0:1:9:0:       class=0x020000 card=0xf3111385 chip=0x0020100b rev=0x00 hdr=0x00
    vendor     = 'National Semiconductors'
    device     = 'DP83815/16 Fast Ethernet Adapter (MacPhyter/MacPhyter-II)'
    class      = network
    subclass   = ethernet

This is the new network card. Notice the name of the "driver": none3. That means the kernel has not attached any actual driver to the hardware. You need to figure out which network driver you need to use to support that chipset. Then either load the kernel module for it (kldload if_<whatever>) or recompile the kernel with that module added to the kernel config file (device <whatever>).

In case you can't figure it out, a google search for the identifier string in the pciconf output shows that sis(4) supports that chipset. So a simple kldload if_sis should get you an sis0 interface. Then you can just add the driver to /boot/loader.conf (read /boot/defaults/loader.conf for the syntax to use) and add the config lines to /etc/rc.conf.