Re: Reproducible problems with re(4) on RELENG_7 and HEAD

>   Disconnecting: Corrupted MAC on input.

I have not seen any error messages but your description sound
identical to something happening on the same hardware to me (p35,
e6850).... Daniel: does this happen to be a MSI Neo-F Mobo?

>
>   Ok, these were the symptones, now the device in the question:
>
>   I suppose that it is an integrated card (the machine is in
>   collocation and I've never seen it by myself). This is the
>   respective line from dmesg:
>
> re0: <RealTek 8168/8111B PCIe Gigabit Ethernet> port 0xd800-0xd8ff mem 0xfdfff000-0xfdffffff irq 19 at device 0.0 on pci2
>
>   pciconf -lv output:
>
> re0_at_pci0:2:0:0: class=0x020000 card=0x368c1462 chip=0x816810ec rev=0x01 hdr=0x00
>     vendor     = 'Realtek Semiconductor'
>     device     = 'RTL8168/8111 PCI-E Gigabit Ethernet NIC'
>     class      = network
>     subclass   = ethernet

re0: <RealTek 8168/8111B PCIe Gigabit Ethernet> port 0xe800-0xe8ff mem
0xfcfff000-0xfcffffff irq 17 at device 0.0 on pci4
re0: Using 2 MSI messages
miibus0: <MII bus> on re0

re0_at_pci0:4:0:0: class=0x020000 card=0x360c1462 chip=0x816810ec rev=0x01 hdr=0x00
    vendor     = 'Realtek Semiconductor'
    device     = 'RTL8168/8111 PCI-E Gigabit Ethernet NIC'
    class      = network
    subclass   = ethernet

So no it is not your hardware (kind of reminds me of the amount time
it took to convience people there was a IHC9/SATA problem on same Mobo
;-))