diff --git a/README.md b/README.md
index e559b99b..8294e4a4 100644
--- a/README.md
+++ b/README.md
@@ -90,6 +90,8 @@ WireGuard Easy can be launched with Docker Compose as well - just download
 [`docker-compose.yml`](docker-compose.yml), make necessary adjustments and
 execute `docker compose up --detach`.
 
+> 💡 If you discover that newly added allowed IPs on the client cannot communicate, you can try setting `net.ipv4.conf.all.src_valid_mark=0` when executing the `docker run` command.
+
 ### 3. Sponsor
 
 Are you enjoying this project? [Buy Emile a beer!](https://github.com/sponsors/WeeJeWel) 🍻