Hi Eli, On Fri, 25 Nov 2016 10:18:12 +0800 Eli Cooper <elicoo...@gmx.com> wrote: > > Sounds like TSO/GSO packets are not properly segmented and therefore > dropped. > > Could you first try turning off segmentation offloading for the tunnel > interface? > ethtool -K sit0 tso off gso off
On Thu, 24 Nov 2016 18:30:14 -0800 Eric Dumazet <eric.duma...@gmail.com> > > You also could try to disable TSO and see if this makes a difference > > ethtool -K sixtofour0 tso off So turning off tso brings performance up to IPv4 levels ... Thanks for that, it solves my immediate problem. -- Cheers, Stephen Rothwell