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From Nick Burke <>
Subject intermittent packet loss after upgrading and restarting networks
Date Fri, 15 Aug 2014 18:40:21 GMT
I upgraded from 4.0 to 4.3.0 some time ago. I didn't restart anything and
it was all working great. However, I had to perform some maintenance and
had to restart everything. Now, I'm seeing packet loss on all virtuals,
even ones on the same host.

sudo ping -c 500  -f
PING ( 56(84) bytes of data.
--- ping statistics ---
500 packets transmitted, 460 received, 8% packet loss, time 864ms
rtt min/avg/max/mdev = 0.069/0.218/1.290/0.139 ms, ipg/ewma 1.731/0.328 ms

No interface errors reported anywhere. The host itself isn't under load at
all. Doesn't matter if the instance uses e1000 or virtio for the drivers.
The only thing that I'm aware of that changed was that I had to reboot all
the physical servers.

Could be related, but I was hit with the

bug. I did follow with Marcus' suggestion:

*"This is a shot in the dark, but there have been some issues around
upgrades that involve the cloud.vlan table expected contents changing. New
4.3 installs using vlan isolation don't seem to reproduce the issue. I'll
see if I can reproduce anything like this with basic and/or non-vlan
isolated upgrades/installs. Can anyone experiencing an issue look at their
database via something like "select * from cloud.vlan" and look at the
vlan_id. If you see something like "untagged" instead of "vlan://untagged",
please try changing it and see if that helps."*


*'What is a human being, then?' 'A seed' 'A... seed?' 'An acorn that is
unafraid to destroy itself in growing into a tree.' -David Zindell, A
Requiem for Homo Sapiens*

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