I did some further digging around and found PR port-sparc64/26025 
detailing some of the problems.

Looks like some fun is in my future ;)

Thanks,

Jonathan Sadler

Hubert Feyrer wrote:

> On Sat, 5 Feb 2005, FatBoy wrote:
>
>>   The re driver does not work on the sparc64 platform yet.
>>
>> Anyone know what the issues are?  I have a bunch of these cards, and 
>> would like to put one in my Ultra (running NetBSD-2.0).
>
> Guess: it's either 64bit or byteorder issues.
> No, I don't know how to fix that, sorry!