Seeing qlcnic driver error flood after upgrading to RHEL6.5 kernel: qlcnic eth0: Can not add more than 32 mac addresses

Solution Verified - Updated -

Issue

  • Ever since upgrading all of our hypervisors to the latest 6.5, and also upgraded our RHEVM environment to 3.2, we are getting " Can not add more than 32 mac addresses" errors in /var/log/messages. The source is a Solaris 10 server and the destination is a RHEL 6.2 Virtual Machine that sits behind a Red Hat Piranha load balancer.
  • The following qlcnic driver messages are flooding /var/log/messages:
Dec 30 10:10:14 localhost kernel: qlcnic 0000:0b:00.0: eth4: Can not add more than 32 mac addresses
Dec 30 10:10:14 localhost kernel: qlcnic 0000:0b:00.0: eth4: Can not add more than 32 mac addresses
Dec 30 10:10:14 localhost kernel: qlcnic 0000:0b:00.0: eth4: Can not add more than 32 mac addresses
Dec 30 10:10:14 localhost kernel: qlcnic 0000:0b:00.0: eth4: Can not add more than 32 mac addresses
Dec 30 10:10:14 localhost kernel: qlcnic 0000:0b:00.0: eth4: Can not add more than 32 mac addresses

Environment

  • Red Hat Enterprise Linux 6.5
    • kernel-2.6.32-431.1.2.el6

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