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Virtual interfaces do not return after restarting network or performing an ifdown and ifup

This document (7000144) is provided subject to the disclaimer at the end of this document.

Environment

SUSE Linux Enterprise Server 11
XEN


Situation

SLES 11 Xen kernel
Virtual interfaces are setup with aliases
vifname=<alias> is set

An issue has been discovered with guests running on an Xen hypervisor where an alias for the virtual interface adapter has been set.  Upon performing any type of restart of the network:

rcnetwork restart
ifdown
ifup

The virtual interfaces do not re-appear and the guests have no network connectivity.

Resolution

Remove the alias setting from the configuration file (bolded):

#==[ Configuration File ]===========================#
# /etc/xen/vm/VMName
name="VMName"
description="None"
uuid="<uuid>"
memory=1024
maxmem=1024
vcpus=1
on_poweroff="destroy"
on_reboot="restart"
on_crash="destroy"
localtime=0
keymap="en-us"
builder="linux"
bootloader="/usr/bin/pygrub"
bootargs=""
extra=" "
disk=[ 'phy:/dev/sda3,xvda,w', ]
vif=[ 'vifname=MYALIAS.0,bridge=br0', ]
vfb=['type=vnc,vncunused=1']

Cause

An issue has been discovered while using aliases on this particular version of SLES. 

Additional Information

Watch this TID for updates as the root issue is resolved.  For now, use the work-around outlined above.

Disclaimer

This Support Knowledgebase provides a valuable tool for NetIQ/Novell/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:7000144
  • Creation Date:20-MAR-12
  • Modified Date:26-APR-12
    • SUSESUSE Linux Enterprise Server

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