On Wed, 2018-02-07 at 20:46 +0100, Yves-Alexis Perez wrote:
> Maybe. I tried with removing the MTU setting, and I get (on ping again)
>
> févr. 07 20:44:01 scapa kernel: mtu: 1266
>
> which means I would get -EINVAL on standards kernels, which is not really good
> either.
Actually after rebootin
On Wed, 2018-02-07 at 13:50 -0500, Mike Maloney wrote:
> On Wed, Feb 7, 2018 at 12:23 PM, Yves-Alexis Perez
>
> Hi Yves-Alexis -
>
> I apologize for the problem. It seems to me that tunneling with an
> outer MTU that causes the inner MTU to be smaller than the min, is
> potentially problematic
On Wed, Feb 7, 2018 at 12:23 PM, Yves-Alexis Perez wrote:
> On Wed, 2018-02-07 at 18:05 +0100, Yves-Alexis Perez wrote:
>> I'll try to printk the mtu before returning EINVAL to see why it's lower than
>> 1280, but maybe the IP encapsulation is not correctly handled?
>
> I did:
>
> diff --git a/net
On Wed, 2018-02-07 at 18:05 +0100, Yves-Alexis Perez wrote:
> I'll try to printk the mtu before returning EINVAL to see why it's lower than
> 1280, but maybe the IP encapsulation is not correctly handled?
I did:
diff --git a/net/ipv6/ip6_output.c b/net/ipv6/ip6_output.c
index 3763dc01e374..d3c651
On Wed, 2018-02-07 at 17:38 +0100, Yves-Alexis Perez wrote:
> Starting with 4.14.16, IPv6 traffic is broken. When trying a simple ping
> to an IPv6 address I get:
>
> ping: sendmsg: Invalid argument
I forgot an important bit of information: due to the way routers usually broke
path MTU discovery
Hi Mike,
I noticed a regression in 4.14.16 stable kernel (I assume it's also
present in mainline).
I'm using an IPsec setup where I tunnel all my IP trafic to a gateway.
The tunnel can use either IPv6 or IPv4 (depending on what's available
locally) and will route both IPv4 and IPv6 (my gateway wi
