>[оверквотинг удален]
> (rev 02)
>         Subsystem: Red Hat, Inc.
> Qemu virtual machine [1af4:1100]
> 00:01.0 ISA bridge [0601]: Intel Corporation 82371SB PIIX3 ISA [Natoma/Triton II] [8086:7000]
>         Subsystem: Red Hat, Inc.
> Qemu virtual machine [1af4:1100]
> --
> 00:01.3 Bridge [0680]: Intel Corporation 82371AB/EB/MB PIIX4 ACPI [8086:7113] (rev 01)
>         Subsystem: Red Hat, Inc.
> Qemu virtual machine [1af4:1100]

Ну и?:
# lspci -nnk | grep -A1 -i bridge
00:00.0 Host bridge [0600]: Intel Corporation 440FX - 82441FX PMC [Natoma] [8086:1237] (rev 02)
        Subsystem: Red Hat, Inc. Qemu virtual machine [1af4:1100]
00:01.0 ISA bridge [0601]: Intel Corporation 82371SB PIIX3 ISA [Natoma/Triton II] [8086:7000]
        Subsystem: Red Hat, Inc. Qemu virtual machine [1af4:1100]
--
00:01.3 Bridge [0680]: Intel Corporation 82371AB/EB/MB PIIX4 ACPI [8086:7113] (rev 01)
        Subsystem: Red Hat, Inc. Qemu virtual machine [1af4:1100]

Домашним заданием был вопрос "почему одинаково?"

ЗЫ:
А это виртуалка под bhyve:
# lspci -nnk | grep -A1 -i bridge
00:00.0 Host bridge [0600]: Network Appliance Corporation Device [1275:1275]
00:03.0 SCSI storage controller [0100]: Red Hat, Inc. Virtio block device [1af4:1001]
--
00:1f.0 ISA bridge [0601]: Intel Corporation 82371SB PIIX3 ISA [Natoma/Triton II] [8086:7000]

Домашнее задание 2: почему Host bridge отличается?

ЗЫЫ:
Мамкины админы всегда ведутся на # в листинге команд.