emphasized textI am trying to set net.ipv4.tcp_challenge_ack_limit parameter inside container but it gives me error as "open /proc/sys/net/ipv4/tcp_challenge_ack_limit: no such file or directory: unknown"

my kernel version is:

uname -a

Linux controller 4.14.240-pc64 #1 SMP Mon Aug 23 09:53:06 UTC 2021 x86_64 x86_64 x86_64 GNU/Linux

my docker version:

docker --version

Docker version 20.10.4, build 20.10.4

looks like docker is not able to add this parameter in container namespace.

on host I can see this parameter using sysctl -a command and i am able to update it as well, but problem is that this parameter is not part of container namespace.

I tried to google and found that such issue comes when this parameter is not namespaced. now I m not sure why this parameter is not name spaced and whether this is an issue in docker or in kernel.