On Thu, Mar 17, 2016 at 2:13 PM, Patrick Boutilier <bouti...@ednet.ns.ca> wrote: > On 03/17/2016 03:27 PM, Jesse Gross wrote: >> >> On Thu, Mar 17, 2016 at 7:02 AM, Patrick Boutilier <bouti...@ednet.ns.ca> >> wrote: >>> >>> I have an IPIP tunnel setup between two hosts in different buildings. The >>> Linux router they route through causes extreme slowness in the tunnel >>> when >>> running kernels from 3.18 on . tcpdump shows many cksum errors which >>> don't >>> show up in the 3.17 and earlier kernels. Speed goes back to normal when >>> rx-checksumming and tx-checksumming are turned off using ethtool on the >>> Linux router . Would this be an effect of bulk network packet >>> transmission >>> that was introduced in 3.18 or some other issue? >> >> >> I just sent out a likely fix, would you mind testing it? >> https://patchwork.ozlabs.org/patch/599213/ >> > > Yes, that patch fixes the problem.
Great, thanks a lot for testing.
