[Bug 673705] Re: running guests freeze when a guest is powered down

[Derek Simkowiak]

This bug is probably a duplicate issue as this:

https://bugs.launchpad.net/ubuntu/maverick/+source/qemu-kvm/+bug/584048

The problem is with Linux bridging.  When adding or removing a MAC
address (like for KVM, VirtualBox, or even LXC) then if the bridge
changes its MAC, this symptom happens.  See comment #60 at the URL
above, and also see this:

https://www.redhat.com/archives/libvir-list/2010-July/msg00450.html

The workaround is to use a MAC address that starts with "fe" (or any
high really high number) for your guests.  This causes the kernel to
default to the hardware MAC for the bridge.

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https://bugs.launchpad.net/bugs/673705

Title:
  running guests freeze when a guest is powered down