[Lxc-users] Huge ammount of invalid checksum packets on macvlan

Andrian Nord nightnord at gmail.com
Mon Feb 21 15:34:21 UTC 2011


Greetings, Daniel.

On Mon, Feb 21, 2011 at 04:20:59PM +0100, Daniel Lezcano wrote:

2.6.37 kernel with gentoo linux patches (doesn't affect any low-system
stuff, AFAIK).
lxc-0.7.2 is used.

Reproducable on two different machines.
I'm using tcpdump -vvv for bad checksum detection. This also affects
traffic from container to hardware node (as it's using macvlan to
communicate with containers by itself).

Also, I've got same problem on UDP packets coming from lan on other
server and it was worked around by disabeling tx and rx checksum offload
via ethtool. But dummy devices doesn't allow this.

Thanks.
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