No, that won't work. This is the NIC we have traffic over:
em1@pci0:3:0:0: class=0x020000 card=0x10d315d9 chip=0x10d38086 rev=0x00 hdr=0x00
   vendor     = 'Intel Corporation'
   device     = '82574L Gigabit Network Connection'
   class      = network
   subclass   = ethernet

So to be exact, I need em0 to not be probed while em1 is probed and attached.

/glz

--On September 18, 2012 10:04:21 +0100 Jamie Paul Griffin <ja...@kode5.net> wrote:


We have a system based on Supermicro X7SPA-HF with IPMI connected via a
shared 82574L NIC. We are not using this NIC for anything from the OS
but  the probing and device attach breaks the IPMI connection so bad
FBSD don't  see any screen during boot. There is no BIOS flag that
disables the NIC  from the OS, only a HW strap but that dsables the IPMI
also.

Is it possible to disable the probe of the NIC using hists to the PCI
bus  driver? I have addded hint.em.0.disable=1 but it does not help.

em0@pci0:2:0:0: class=0x020000 card=0x10d315d9 chip=0x10d38086 rev=0x00
hdr=0x00
    vendor     = 'Intel Corporation'
    device     = '82574L Gigabit Network Connection'
    class      = network
    subclass   = ethernet

Any other suggestions appreciated.

You could remove it from the Kernel config file and build a custom Kernel.
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