Re: [Astlinux-users] Wireguard VPN disconnection

[Lonnie A. <li...@lo...>]

Hi Michael,

I have not experienced anything like that, WireGuard connectivity is rock solid for me.

I don't recall later WireGuard versions having any fixes for what you are describing.

Just guessing, the standard MTU for WG is 1420 (1500-80), if you have a PPPoE connection with a MTU of 1492 you might try setting the WG MTU to 1412 (1500-8-80) or lower to test.

I'm testing a 4G-LTE/5G fixed wireless internet service from T-Mobile, they use Carrier Grade NAT (CGNAT) for IPv4 which lowers the MTU to 1420 (just like WG) so WG needs a MTU setting of 1340 to work over the CGNAT or else it hangs.

Lonnie




> On Mar 19, 2021, at 3:42 PM, Michael Knill <mic...@ip...> wrote:
> 
> Hi Group
>  
> Not sure if anyone else is experiencing this. I'm on 1.3.10 and all my systems connect via Wireguard VPN to both my softswitches.
> Its generally all pretty stable but occasionally one of the VPN’s will be disconnected and I have tried everything I can think of to bring it back up but only a reboot has managed to do so at this stage.
> Any ideas?
>  
> Regards
> Michael Knill
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