Hello, I've got a very unusual network interface issue on centos5. I'm setting up a router box, with two network interface cards, the first gets it's information from a dhcp server, the second is statically configured. I have no idea what happened, but yesterday the internal interface eth1 stopped showing up. An ifconfig eth1 showed the interface not found, but an ifconfig -a shows a strange __tmp interface. Below is some output:

#cat /proc/modules iptable_filter 7105 0 - Live 0xc890c000 ip_tables 17029 1 iptable_filter, Live 0xc88e6000 x_tables 17349 1 ip_tables, Live 0xc884b000 dm_mirror 29713 0 - Live 0xc892c000 dm_mod 56665 1 dm_mirror, Live 0xc893e000 parport_pc 29157 1 - Live 0xc8923000 lp 15849 0 - Live 0xc8842000 parport 37513 2 parport_pc,lp, Live 0xc8901000 floppy 57125 0 - Live 0xc8914000 ide_cd 40033 0 - Live 0xc88f6000 cdrom 36705 1 ide_cd, Live 0xc88ec000 serio_raw 10693 0 - Live 0xc8847000 pcspkr 7105 0 - Live 0xc8811000 8139cp 26305 0 - Live 0xc88d8000 8139too 28737 0 - Live 0xc88cf000 mii 9409 2 8139cp,8139too, Live 0xc883e000 tulip 50785 0 - Live 0xc88c1000 i2c_viapro 12117 0 - Live 0xc8816000 i2c_core 23745 1 i2c_viapro, Live 0xc8829000 ext3 123081 2 - Live 0xc8860000 jbd 56553 1 ext3, Live 0xc8851000 ehci_hcd 32845 0 - Live 0xc8834000 ohci_hcd 23261 0 - Live 0xc8822000 uhci_hcd 25421 0 - Live 0xc881a000

#cat /etc/modprobe.conf alias eth0 8139too alias eth1 tulip alias net-pf-10 off

#ifconfig eth1 eth1: error fetching interface information: Device not found

#ifconfig -a __tmp2065753655 Link encap:Ethernet HWaddr 00:A0:CC:64:E6:3E 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:12 Base address:0x4f00

#cat /etc/sysconfig/network-scripts-ifcfg-eth1 # Internal Ethernet Device (STATIC) DEVICE=eth1 TYPE=Ethernet IPADDR=192.168.1.1 NETMASK=255.255.255.0 ONBOOT=yes BOOTPROTO=static IPV6INIT=no HWaddr=00:A0:CC:64:E6:3E

If i reboot the box that tmp long number changes, that made me think that the eth1 file was in the middle of an editing session when a crash occurred, i however can not find a tmp file for a crashed editor session. I've tried removing the nic and putting it in another box, and it worked. I am open to suggestions. Thanks. Dave.