Changelog for mullvad-vpn-2022.4-7.18.x86_64.rpm :

* Fri Aug 19 2022 Linus Färnstrand - 2022.4- Fix issue where MTU could not be manually set in the app.- Lower the max MTU from the automatic MTU detection down to 1380, which was the hardcoded default before the automatic detection was implemented. This solves issues where the physical interface MTU was set higher than it could actually transport.