On Fr, 18.04.25 00:35, EpicTux123 (epictux...@proton.me) wrote: > Hello there. > > I had the following file in my system: > > /etc/sysctl.d/90-custom-mtu-probing.conf > net.ipv4.tcp_mtu_probing=1 > > I deleted that file and rebooted my system. > But the "net.ipv4.tcp_mtu_probing" value is still "1", even though > its default is "0".
This looks as if something else in your system is fiddling with that setting. To check if anything is doing that via "systemd-sysctl", you can run "/usr/lib/systemd/systemd-sysctl --tldr". Other tools that manage variable like that are usually networking and routing daemons. (Not systemd-networkd though, it doesn#t manager that one). Lennart -- Lennart Poettering, Berlin
