Created some Mullvad WireGuard Gateways...monitoring is making me crazy

[jorglodita]

Hi!
This week I have been trying to add some Mullvad WireGuard Gateways to my setup, so I can have some VLAN that connect to internet using Mullad WireGuard.

I have followed the "official" guide step by step:
https://docs.opnsense.org/manual/how-tos/wireguard-selective-routing.html

Each time I failed I just did a format and start from scratch, I am pretty sure I am following all the steps and the connections are well done (that's the reason I don't post screens, the guide is very straightforward) .

The setup works. Works wonders, using wireguard-go or kmod (the guide didnt used kmod, used it once just for testing). I have created (just for testing) 5 different new Gateways using Millvad, each one in a different country (for testing latency and those things too). And they are working.

Whats the problem?

I can connect to any of those VLAN, check Mullvad is totally working (https://mullvad.net/en/check/) and confirm I can browse all Internet no problem.
BUT when I change from the Mullvad VLAN I was using to the normal VLAN and I go to the OPNsense dashboard I check the Gateway Status and see ALL MULLVAD CONNECTIONS got "packetloss" status. It reverts back to 1% or 0% loss after a minute or so (and go high again if i reconnect to any of the Mullvad Gateways).

I have a normal setup, I format between each big configuration change to start fresh and I am really sure I have followed the tutorial step by step.

I have tried using 1.1.1.1 for monitoring, same result. At the moment I am using Mullvad "official DNS" to monitor each Gateway.

The problem is that I really don't know if I have a problem or its the dpinger service that's not very reliable. So I don't know if I must troubleshot anything or just disable the Gateway monitoring at all. 

Latency in all Gateways is stable, goes from 35ms to 55ms (I will end using the 35 ms one). RTTd is around 10ms in all of them and Loss is usually 0%, but when I use one of them ALL shows more than 20% and "packetloss" warnings.

There are no error logs, apparently the connection is OK and seems its working. But I dont feel very safe having color warnings on screen telling there are problem with ALL my Gateways each time I use one of Mullvads so I don't know what to think.

Someone knows if this is normal or something is happening? Thanks a lot in advance!