Olivierdacmot@sunny.garden
Nov 3, 2026, 2:40 PM@malwaretech thanks! Found some many docker processes listening with mctcp.
Does the net.mptcp.enable=0 survives reboot?
Replies
roserose@socialbc.caNov 3, 2026, 3:10 PM@dacmot It does not. For persistent changes, edit a file in /lib/sysctl.d/ such as, on Fedora or Debian, /lib/sysctl.d/50-default.conf to add "net.mptcp.enable = 0"
lp0 on fire :verified_coffee:lp0_on_fire@cupoftea.socialNov 3, 2026, 9:48 PM@rose @dacmot, actually, no. That's the wrong place: it'll be overwritten when linux-sysctl-defaults (or its Fedora equivalent) is updated. Put that line in a file in
/etc/sysctl.d.(Also, it's actually
/usr/lib/sysctl.d/50-default.conf; you just found it via/libbecause of the usr-merge shenanigans.)- roserose@socialbc.caNov 4, 2026, 12:51 AM
@lp0_on_fire @dacmot Thanks. I actually experienced that overwriting today when I upgraded Fedora 44 => 45. It makes sense not to edit files in [/usr]/lib/.