Red Hat Bugzilla – Bug 188454
Interface names eth0, eth1 assigned randomly at boot time
Last modified: 2007-11-30 17:11:30 EST
Description of problem: The interface names eth0, eth1 get assigned randomly at boot time. Sometimes eth0 is fixed FE and eth1 is the wireless interface; sometimes vice versa. This is despite the fact that I have the following default settings in modprobe.conf: alias eth0 via-rhine alias eth1 ipw2100 Version-Release number of selected component (if applicable): Don't know what causes this bug. How reproducible: Always Steps to Reproduce: 1.reboot machine with 2 interfaces 2.check which name is which interface 3.goto 1 Actual results: Interface names change after reboot Expected results: eth0 should be wired eth1 wireless Additional info: As workaround, I added the following as first line in modprobe.conf: install ipw2100 /sbin/modprobe via-rhine; /sbin/modprobe --ignore-install ipw2100 This seems to fix it, but Fedora default configuration should take care of it.
just bind the MAC Address to the interface name via system-config-network or in the ifcfg-<interface> config file with "HWADDR=".
HWADDR= doesn't fix it. I tried again with the config below and it still gives me the wrong results: --ifcfg-eth0-- # VIA Technologies|VT6105 [Rhine-III] DEVICE=eth0 HWADDR=00:40:D0:3D:7F:D5 ONBOOT=no TYPE=Ethernet USERCTL=yes IPADDR=192.168.0.3 NETMASK=255.255.255.0 --ifcfg-eth1-- # Intel Corp.|PRO/Wireless LAN 2100 3B Mini PCI Adapter DEVICE=eth1 HWADDR=00:04:23:64:85:A0 ONBOOT=no BOOTPROTO=dhcp TYPE=Wireless USERCTL=yes --modprobe.conf-- #options pbe5 radio=0 #install ipw2100 /sbin/modprobe via-rhine;/sbin/modprobe pbe5;/sbin/modprobe --ignore-install ipw2100 alias eth0 via-rhine alias eth1 ipw2100 alias snd-card-0 snd-intel8x0 options snd-card-0 index=0 options snd-intel8x0 index=0 remove snd-intel8x0 { /usr/sbin/alsactl store 0 >/dev/null 2>&1 || : ; }; /sbin/modprobe -r --ignore-remove snd-intel8x0 ifconfig -a after reboot; note the swapped MACs and i/f names: eth0 Link encap:Ethernet HWaddr 00:04:23:64:85:A0 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:11 Base address:0x8000 Memory:e0001000-e0001fff eth1 Link encap:Ethernet HWaddr 00:40:D0:3D:7F:D5 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:11 Base address:0xe800 # iwlist eth1 scan eth1 Interface doesn't support scanning. # iwlist eth0 scan eth0 Scan completed : Cell 01 - ....
*** This bug has been marked as a duplicate of 187550 ***