On Wed, 2012-05-30 at 08:28 +0200, Jean-Michel Hautbois wrote:
If this can help, setting tx queue length to 5000 seems to make the
problem disappear.
Then you should have drops at Qdisc layer (before your change to 5000)
tc -s -d qdisc
I didn't specified it : MTU is 4096, UDP packets are 4000 bytes.