I think this is the kernel setting. Please check this: https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/tree/Documentation/networking/ip-sysctl.txt?id=refs/tags/v4.6.1#n1571
I think this is the kernel setting. Please check this: https:/ /git.kernel. org/pub/ scm/linux/ kernel/ git/stable/ linux.git/ tree/Documentat ion/networking/ ip-sysctl. txt?id= refs/tags/ v4.6.1# n1571