Thanks for all the excellent replies to this question.
Dinesh's answer looks like exactly what I'm experiencing.
Unfortunately I can't use FreeBSD 4, because I don't think FASTIPSEC with
the HiFn card is supported there.
I tried with OpenBSD 3.8 and got similar performance to FreeBSD.
I might try
Hi, I've just bought 2 soekris net4801-60 boxes and am having trouble getting
them to perform under FreeBSD.
They are on a 100Mbit network and the network works fine for other machines
- FreeBSD, Linux and Windows.
I've tried a custom kernel running FreeBSD 6.1 PRELEASE and a GENERIC kernel