Другая пара "хост-гость" (системы на хосте и госте те же)
На госте
[user@host-15 ~]$ ip l
1: lo: <LOOPBACK,UP,LOWER_UP> mtu 65536 qdisc noqueue state UNKNOWN mode DEFAULT group default qlen 1
link/loopback 00:00:00:00:00:00 brd 00:00:00:00:00:00
2: [b]eth0[/b]: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc pfifo_fast state UP mode DEFAULT group default qlen 1000
link/ether [b]08:00:27:b9:38:0c[/b] brd ff:ff:ff:ff:ff:ff
[user@host-15 ~]$ lspci
00:00.0 Host bridge: Intel Corporation 440FX - 82441FX PMC [Natoma] (rev 02)
00:01.0 ISA bridge: Intel Corporation 82371SB PIIX3 ISA [Natoma/Triton II]
00:01.1 IDE interface: Intel Corporation 82371AB/EB/MB PIIX4 IDE (rev 01)
00:02.0 VGA compatible controller: InnoTek Systemberatung GmbH VirtualBox Graphics Adapter
00:03.0 [b]Ethernet controller: Intel Corporation 82540EM Gigabit Ethernet Controlle[/b]r (rev 02)
00:04.0 System peripheral: InnoTek Systemberatung GmbH VirtualBox Guest Service
00:05.0 Multimedia audio controller: Intel Corporation 82801AA AC'97 Audio Controller (rev 01)
00:06.0 USB controller: Apple Inc. KeyLargo/Intrepid USB
00:07.0 Bridge: Intel Corporation 82371AB/EB/MB PIIX4 ACPI (rev 08)
[user@host-15 ~]$
и
[root@host-15 rules.d]# cat 70-persistent-net.rules
# This file was automatically generated by the /lib/udev/write_net_rules
# program, run by the persistent-net-generator.rules rules file.
#
# You can modify it, as long as you keep each rule on a single
# line, and change only the value of the NAME= key.
# PCI device 0x8086:0x100e ([b]e1000[/b])
SUBSYSTEM=="net", ACTION=="add", DRIVERS=="?*", ATTR{address}=="[b]08:00:27:b9:38:0c[/b]", ATTR{dev_id}=="0x0", ATTR{type}=="1", KERNEL=="eth*", NAME="[b]eth0[/b]"
[root@host-15 rules.d]#
несмотря на совпадение имен устройств, MAC-адресов и (вроде как) моделей, сеть на госте все равно не работает.