Wireguard network loses about 10% of traffic
There is a wireguard vpn to a server in Germany.
At certain moments, the vpn starts losing close to 10% of traffic and also cannot connect to the DNS server via wireguard, so websites in the internal network open very slowly.
The problem occurs both for clients from Ukraine and from Europe (Spain, Italy).
Ping from the client to the server:
```
--- wd-admin-web.webdevelop.ll ping statistics ---
1030 packets transmitted, 959 received, 6.8932% packet loss, time 1031975ms
rtt min/avg/max/mdev = 40.221/41.103/45.987/0.683 ms
```
Ping to google.de:
```
--- google.de ping statistics ---
2020 packets transmitted, 2020 received, 0% packet loss, time 1002915ms
rtt min/avg/max/mdev = 34.726/35.128/35.898/0.221 ms
```
Need to figure out why the traffic is lost. Maybe it is necessary to find the correct MTU, we tried to set up https://github.com/ngoduykhanh/wireguard-ui (it can automatically select MTU) but unfortunately it did not work for us.
Ideal option:
- fix the traffic loss
- set up and configure github.com/ngoduykhanh/wireguard-ui
but it is also possible just to fix the traffic loss
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