# sysctl settings are defined through files in # /usr/lib/sysctl.d/, /run/sysctl.d/, and /etc/sysctl.d/. # # Vendors settings live in /usr/lib/sysctl.d/. # To override a whole file, create a new file with the same in # /etc/sysctl.d/ and put new settings there. To override # only specific settings, add a file with a lexically later # name in /etc/sysctl.d/ and put new settings there. # # For more information, see sysctl.conf(5) and sysctl.d(5). net.ipv4.conf.all.arp_notify = 1 net.ipv4.conf.default.arp_notify = 1 net.ipv4.conf.all.arp_announce = 2 net.ipv4.conf.default.arp_announce = 2 kernel.printk = 3 4 1 3