Kernel panic on bonding with multiport NIC (BONDING)

This document (7004571) is provided subject to the disclaimer at the end of this document.


SUSE Linux Enterprise Server 10 Service Pack 2
SUSE Linux Enterprise Server 10 Service Pack 1


After setting up bonding according to SUSE Documentation with multiport NIC randomly a Kernel Panic occours. Bonding is made with

   BONDING_MODULE_OPTS='mode=active-backup miimon=10 use_carrier=0'

messages like the following can be found in /var/log/messages

   bonding: bond2: Warning: the permanent HWaddr of eth3 - 00:1f:29:c7:54:9c - is still in use by bond2. Set the HWaddr of    eth3 to a different address to avoid conflicts.



Use the following setting for bonding

   BONDING_MODULE_OPTS='mode=1 miimon=100 fail_over_mac=follow use_carrier=1'

one thing is not to use the deprecated ethtools (carrier=1) and the second is explained in /usr/src/linux/Documentation/networking/bonding.txt under "follow or 2" which recommends this setting for multiport nics.


This Support Knowledgebase provides a valuable tool for SUSE customers and parties interested in our products and solutions to acquire information, ideas and learn from one another. Materials are provided for informational, personal or non-commercial use within your organization and are presented "AS IS" WITHOUT WARRANTY OF ANY KIND.

  • Document ID:7004571
  • Creation Date: 30-Sep-2009
  • Modified Date:15-Mar-2021
    • SUSE Linux Enterprise Server

< Back to Support Search

For questions or concerns with the SUSE Knowledgebase please contact: tidfeedback[at]

SUSE Support Forums

Get your questions answered by experienced Sys Ops or interact with other SUSE community experts.

Join Our Community

Support Resources

Learn how to get the most from the technical support you receive with your SUSE Subscription, Premium Support, Academic Program, or Partner Program.

SUSE Customer Support Quick Reference Guide SUSE Technical Support Handbook Update Advisories
Support FAQ

Open an Incident

Open an incident with SUSE Technical Support, manage your subscriptions, download patches, or manage user access.

Go to Customer Center