Re: KVM doesn't send an arp announce after live migrating a domain

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 On 08/25/2010 12:21 PM, Nils Cant wrote:
On 08/25/2010 10:38 AM, Gleb Natapov wrote:
qemu sends gratuitous ARP after migration. Check forward delay setting on your
bridge interface. It should be set to zero.


Aha! That fixed it. Turns out that debian bridge-utils sets the default to 15 for bridges. Manually setting it to 0 with 'brctl setfd br0 0' or setting the 'bridge_fd' parameter to 0 in /etc/network/interfaces solves the issue.


I think libvirt is doing something about this, copying list for further info.

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