とりあえず…

/etc/udev/rules.d/z25_persistent-net.rules　を編集。

# 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.

# PCI device 0x10de:0x054c (forcedeth)

# SUBSYSTEM=="net", DRIVERS=="?*", ATTR{address}=="bc:99:50:d0:1f:00", NAME="eth0"

# PCI device 0x10de:0x054c (forcedeth)

SUBSYSTEM=="net", DRIVERS=="?*", ATTR{address}=="00:1f:d0:50:99:bc", NAME="eth0"

でもってReboot。

で、ifconfgの結果が…

eth0 Link encap:イーサネット ハードウェアアドレス 00:1f:d0:50:99:bc

inetアドレス:192.168.0.2 ブロードキャスト:192.168.0.255 マスク:255.255.255.0

inet6アドレス: fe80::21f:d0ff:fe50:99bc/64 範囲:リンク

UP BROADCAST RUNNING MULTICAST MTU:1500 メトリック:1

RXパケット:223 エラー:0 損失:0 オーバラン:0 フレーム:0

TXパケット:264 エラー:0 損失:0 オーバラン:0 キャリア:0

衝突(Collisions):0 TXキュー長:1000

RXバイト:22170 (21.6 KiB) TXバイト:38068 (37.1 KiB)

割り込み:254 ベースアドレス:0x4000

lo Link encap:ローカルループバック

inetアドレス:127.0.0.1 マスク:255.0.0.0

inet6アドレス: ::1/128 範囲:ホスト

UP LOOPBACK RUNNING MTU:16436 メトリック:1

RXパケット:66 エラー:0 損失:0 オーバラン:0 フレーム:0

TXパケット:66 エラー:0 損失:0 オーバラン:0 キャリア:0

衝突(Collisions):0 TXキュー長:0

RXバイト:5104 (4.9 KiB) TXバイト:5104 (4.9 KiB)

lspciがこうなって

00:00.0 RAM memory: nVidia Corporation MCP67 Memory Controller (rev a2)

00:01.0 ISA bridge: nVidia Corporation MCP67 ISA Bridge (rev a2)

00:01.1 SMBus: nVidia Corporation MCP67 SMBus (rev a2)

00:01.2 RAM memory: nVidia Corporation MCP67 Memory Controller (rev a2)

00:02.0 USB Controller: nVidia Corporation MCP67 OHCI USB 1.1 Controller (rev a2)

00:02.1 USB Controller: nVidia Corporation MCP67 EHCI USB 2.0 Controller (rev a2)

00:04.0 USB Controller: nVidia Corporation MCP67 OHCI USB 1.1 Controller (rev a2)

00:04.1 USB Controller: nVidia Corporation MCP67 EHCI USB 2.0 Controller (rev a2)

00:06.0 IDE interface: nVidia Corporation MCP67 IDE Controller (rev a1)

00:07.0 Audio device: nVidia Corporation MCP67 High Definition Audio (rev a1)

00:08.0 PCI bridge: nVidia Corporation MCP67 PCI Bridge (rev a2)

00:09.0 IDE interface: nVidia Corporation MCP67 AHCI Controller (rev a2)

00:0a.0 Ethernet controller: nVidia Corporation MCP67 Ethernet (rev a2)

00:12.0 VGA compatible controller: nVidia Corporation GeForce 7025 (rev a2)

00:18.0 Host bridge: Advanced Micro Devices [AMD] K8 [Athlon64/Opteron] HyperTransport Technology Configuration

00:18.1 Host bridge: Advanced Micro Devices [AMD] K8 [Athlon64/Opteron] Address Map

00:18.2 Host bridge: Advanced Micro Devices [AMD] K8 [Athlon64/Opteron] DRAM Controller

00:18.3 Host bridge: Advanced Micro Devices [AMD] K8 [Athlon64/Opteron] Miscellaneous Control

dmesg |grep eth　が

forcedeth: Reverse Engineered nForce ethernet driver. Version 0.61.

forcedeth 0000:00:0a.0: ifname eth0, PHY OUI 0x732 @ 1, addr 00:1f:d0:50:99:bc

forcedeth 0000:00:0a.0: highdma pwrctl mgmt timirq gbit lnktim msi desc-v3

Driver 'sd' needs updating - please use bus_type methods

eth0: no IPv6 routers present

eth0: no IPv6 routers present

こうなりました。

/etc/network/interfacesはどうなったかというと

# This file describes the network interfaces available on your system

# and how to activate them. For more information, see interfaces(5).

# The loopback network interface

auto lo

iface lo inet loopback

# The primary network interface

allow-hotplug eth0

iface eth0 inet dhcp

……あとはこれを固定するだけか。