Messages in this thread | | | Subject | Re: Regression for ip6-in-ip4 IPsec tunnel in 4.14.16 | From | Yves-Alexis Perez <> | Date | Thu, 08 Feb 2018 13:40:24 +0100 |
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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 rebooting on the Debian 4.14.17 kernel, with the outter MTU unset (or set to 1360), I don't get the -EINVAL anymore, so maybe it'd be OK.
Unfortunately I have the feeling that debugging this will be a bit tricky for other people. MTU tuning for tunnels are always a bit confusing, but having the kernel return EINVAL on a ping doesn't really help narrowing it down to that MTU setting. Not sure if some kind of logging could be added to help?
Regards, -- Yves-Alexis[unhandled content-type:application/pgp-signature] | |