On Wed, May 25, 2016 at 2:10 PM, Maxence Sartiaux <contact@makz.me> wrote:
Yep work good !

Adding

ETHTOOL_OPTIONS='-K iface lro off'

to the slave interfaces config file did the job :)

Thank you !

On Wed, 2016-05-25 at 10:37 +0100, Alex Crow wrote:
On 25/05/16 10:28, Maxence Sartiaux wrote:
Hello, 

I've a problem, all my ovirt hosts are linked with a bonding mode 4 (802.3ad LACP) 2x10Gbps
Eveything is okay with unix guest but with Windows guest, i can ping but internet browsing is impossible (sometime i have a part of the page, very rare case)

If i remove the bonding and bridge one interface, windows work good.

I've tried with windows 7 and windows 10, guest additions are installed
VirtIO / rtl3189 tested, same problem

My bonding opts : mode=4 lacp_rate=1 miimon=100
Interface MTU 9000

Bonding mode 2 also tested

On the hosts, try setting LRO off on the members of your bond, see if it makes a difference

eg,

ethtool -K ens3f0 lro off
ethtool -K ens3f1 lro off

Alex


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There was such a bug with the bonding driver not dropping the LRO when bind to a bridge.

Thanks,
Edy.