NOTE: failed to empirically measure MTU (requires OpenVPN 1.5 or higher at other end of connection).

[emoxam]

Hello all!
I've got server
cat /etc/os-release
PRETTY_NAME="Ubuntu 22.04.1 LTS"
with
openvpn/now 2.5.5-1ubuntu3.1

placed "mtu-test" to my config
no mtu settings are definned

client it's my windows 11 PC with OpenVPN 2.6.8
No mtu setting defined at the client config

That's what i see when i connected to server

Code: Select all

NOTE: Beginning empirical MTU test -- results should be available in 3 to 4 minutes.
NOTE: failed to empirically measure MTU (requires OpenVPN 1.5 or higher at other end of connection).

What can i do to fix it ?
I dive into mtu-test because i got a lot of mry errors while clients connects to server.

Code: Select all

WARNING: 'link-mtu' is used inconsistently, local='link-mtu 1551', remote='link-mtu 1531'

Thanks