[Bug 584048] Re: kvm images losing connectivity w/bridged network

[Andrew Klettke]

> If you don't mind, once you verify the host's /proc/net/arp entries
> before and after it goes bad, I'm going to whip up a recipe for trying
> to reproduce this without kvm, so we can reclassify it approrpriately.

I don't see the ARP entry for the guest  at all on the host machine
before the networking fails, it's just not there; even after pinging the
host machine from the guest, and vice-versa. It doesn't make a
difference whether or not STP is enabled on the bridge.

BEFORE NETWORKING FAILS:
# cat /proc/net/arp 
IP address       HW type     Flags       HW address            Mask     Device
192.168.1.154    0x1         0x2         00:30:1b:be:63:4f     *        eth0
192.168.8.1      0x1         0x2         00:15:17:dc:2f:a2     *        br0


AFTER NETWORKING FAILS:
# cat /proc/net/arp 
IP address       HW type     Flags       HW address            Mask     Device
192.168.1.154    0x1         0x2         00:30:1b:be:63:4f     *        eth0
192.168.8.1      0x1         0x2         00:15:17:dc:2f:a2     *        br0

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kvm images losing connectivity w/bridged network
https://bugs.launchpad.net/bugs/584048
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