Extreme slowness in IPIP tunnel when routing through kernel 3.18 and later

2016-03-19 Thread Patrick Boutilier
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

Re: Extreme slowness in IPIP tunnel when routing through kernel 3.18 and later

2016-03-19 Thread Patrick Boutilier
On 03/17/2016 01:47 PM, Tom Herbert wrote: On Thu, Mar 17, 2016 at 7:02 AM, Patrick Boutilier 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

Re: Extreme slowness in IPIP tunnel when routing through kernel 3.18 and later

2016-03-19 Thread Patrick Boutilier
On 03/17/2016 03:27 PM, Jesse Gross wrote: On Thu, Mar 17, 2016 at 7:02 AM, Patrick Boutilier 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