Ethernet devices no longer appear as ethN

Solution Verified - Updated -

Environment

  • Red Hat Enterprise Linux

Issue

  • Ethernet devices no longer appear as ethN (devices now show up as __tmpxxxx).
  • Missing eth2, eth4.

Resolution

  • Add the ehternet devices MAC address to the correct /etc/sysconfig/network-scripts/ifcfg-ethN file.
    [iphands@handsbox ~]$ grep HWADDR /etc/sysconfig/network-scripts/ifcfg-eth0
HWADDR=00:1A:A0:B4:05:BA
[iphands@handsbox ~]$ ifconfig eth0 | grep HWaddr
eth0      Link encap:Ethernet  HWaddr 00:1A:A0:B4:05:BA

Diagnostic Steps

  • Run ifconfig and look for __tmpxxxx devices.
  • Look at the /etc/sysconfig/network-scripts/ifcfg-eth* scripts for HWADDR directives.

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