Why system throws error "SIOCSIFFLAGS: Device or resource busy" while bringing up bnx2 network interface?

Solution Unverified - Updated -

Issue

  • System gives following error while bringing up eth network interface:
ERROR SIOCSIFFLAGS: Device or resource busy
  • Restarting network service also results in the same output. No hardware issues are detected in hardware diagnostics.
  • MAC Address of Broadcom bnx2 network interface has changed to EA:5E:00:0C:EA:5E

Environment

  • Red Hat Enterprise Linux 4
  • Red Hat Enterprise Linux 5
  • Broadcom NetXtreme II network interface card using bnx2 driver

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