[CentOS] non-fluff: NIC configuration: mingnt?

We've got this really bizarre problem, trying to get a bridge/firewall
working. My manager and I are almost grasping at straws....

Anyway, I'm using lshw to look at an identical machine, and a Dell 1950
that works when configured as a bridge, and there's one thing I don't
know: does anyone know what mingnt is?

Thanks.

        mark