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 Jesse Gross
On Thu, Mar 17, 2016 at 2:13 PM, Patrick Boutilier wrote: > 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 ex

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

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

2016-03-18 Thread Tom Herbert
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 many cksum errors which don't > show up

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

2016-03-18 Thread Jesse Gross
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 many cksum errors which don't > show up