The simplest thing to do is delete your network configuration files and
reconfigure the network from scratch.
e.g.
rm -rf "/etc/sysconfig/network-scripts/ifcfg-eth*"
The problem is that your original net config has most likely specified
the MAC address in the configuration and that MAC no longer exists, the
renaming crap is just trying to be "smart" and get you out of this mess,
but like all "smart" things, it never works when you really need it.
You could also just update the MAC in your existing config files
Albert.
Chris Kottaridis wrote:
I had a Dell machine and the motherboard went belly up. So, I took my
machine to a local Computer shop and the basically gave me a new chassis
and motherboard, but kept my disk drives. Things are mostly working, but
it, or rather me, seem to be a little bit confused about the on board
ethernet.
I have the on-board ethernet and an add-on card. During boot I see this
message:
tg3 device eth0 does not seem to be present, delaying initialization.
Looking at dmesg I get the following:
8139too Fast Ethernet driver 0.9.28
ACPI: PCI Interrupt 0000:00:1f.3[C] -> GSI 18 (level, low) -> IRQ 18
ACPI: PCI Interrupt 0000:05:00.0[A] -> GSI 20 (level, low) -> IRQ 21
eth0: RealTek RTL8139 at 0xf8834000, 00:1d:0f:c0:01:bc, IRQ 21
eth0: Identified 8139 chip type 'RTL-8100B/8139D'
r8169 Gigabit Ethernet driver 2.2LK-NAPI loaded
ACPI: PCI Interrupt 0000:04:00.0[A] -> GSI 16 (level, low) -> IRQ 16
PCI: Setting latency timer of device 0000:04:00.0 to 64
eth1: RTL8168b/8111b at 0xf8966000, 00:1a:4d:5e:f2:75, XID 38000000 IRQ
219
8139cp: 10/100 PCI Ethernet driver v1.3 (Mar 22, 2004)
udev: renamed network interface eth1 to eth2
udev: renamed network interface eth0 to eth1
ACPI: PCI Interrupt 0000:00:1b.0[A] -> GSI 22 (level, low) -> IRQ 22
The RealTek RTL8139 is my add-on card and the r8168b/8222b id the new
on-board ethernet.
Doing an ifconfig -a shows:
# ifconfig -a
eth1 Link encap:Ethernet HWaddr 00:1D:0F:C0:01:BC
inet addr:192.65.171.33 Bcast:192.65.171.63
Mask:255.255.255.224
inet6 addr: fe80::21d:fff:fec0:1bc/64 Scope:Link
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
RX packets:22146 errors:0 dropped:0 overruns:0 frame:0
TX packets:22187 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:1000
RX bytes:20938687 (19.9 MiB) TX bytes:3083685 (2.9 MiB)
Interrupt:21 Base address:0x4000
eth2 Link encap:Ethernet HWaddr 00:1A:4D:5E:F2:75
BROADCAST MULTICAST MTU:1500 Metric:1
RX packets:0 errors:0 dropped:0 overruns:0 frame:0
TX packets:0 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:1000
RX bytes:0 (0.0 b) TX bytes:0 (0.0 b)
Interrupt:219 Base address:0x6000
lo Link encap:Local Loopback
inet addr:127.0.0.1 Mask:255.0.0.0
inet6 addr: ::1/128 Scope:Host
UP LOOPBACK RUNNING MTU:16436 Metric:1
RX packets:8096 errors:0 dropped:0 overruns:0 frame:0
TX packets:8096 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:0
RX bytes:4239466 (4.0 MiB) TX bytes:4239466 (4.0 MiB)
I am a little confused about udev remapping eth0 to eth1 and eth1 to
eth2. Why isn't there an eth0 ?
On my old motherboard I had the on-board ethernet come up as eth0 and
the add-on board come up as eth1.
I can actually bring up the eth2 interface which seems to be the
on-board ethernet, at least I can ping addresses on that network:
========================================
[root@worker log]# ifconfig eth2 172.25.33.35
[root@worker log]# ifconfig -a
eth1 Link encap:Ethernet HWaddr 00:1D:0F:C0:01:BC
inet addr:192.65.171.33 Bcast:192.65.171.63
Mask:255.255.255.224
inet6 addr: fe80::21d:fff:fec0:1bc/64 Scope:Link
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
RX packets:22189 errors:0 dropped:0 overruns:0 frame:0
TX packets:22226 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:1000
RX bytes:20955519 (19.9 MiB) TX bytes:3086385 (2.9 MiB)
Interrupt:21 Base address:0x4000
eth2 Link encap:Ethernet HWaddr 00:1A:4D:5E:F2:75
inet addr:172.25.33.35 Bcast:172.25.255.255 Mask:255.255.0.0
inet6 addr: fe80::21a:4dff:fe5e:f275/64 Scope:Link
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
RX packets:3 errors:0 dropped:0 overruns:0 frame:0
TX packets:19 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:1000
RX bytes:200 (200.0 b) TX bytes:3687 (3.6 KiB)
Interrupt:219 Base address:0x6000
lo Link encap:Local Loopback
inet addr:127.0.0.1 Mask:255.0.0.0
inet6 addr: ::1/128 Scope:Host
UP LOOPBACK RUNNING MTU:16436 Metric:1
RX packets:8104 errors:0 dropped:0 overruns:0 frame:0
TX packets:8104 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:0
RX bytes:4240288 (4.0 MiB) TX bytes:4240288 (4.0 MiB)
[root@worker log]# ping 172.25.33.33
PING 172.25.33.33 (172.25.33.33) 56(84) bytes of data.
64 bytes from 172.25.33.33: icmp_seq=1 ttl=255 time=3.29 ms
64 bytes from 172.25.33.33: icmp_seq=2 ttl=255 time=1.12 ms
--- 172.25.33.33 ping statistics ---
2 packets transmitted, 2 received, 0% packet loss, time 999ms
rtt min/avg/max/mdev = 1.125/2.211/3.298/1.087 ms
=============================================
So, how do I get Linux to recognize the new motherboard's ethernet card
as eth0 instead of eth2 ?
Thanks
Chris Kottaridis (chriskot@xxxxxxxxxxxxx)
