There is a line "GRUB_CMDLINE_LINUX_DEFAULT" ... in your /etc/default/grub which you may add „ipv6.disable=1“ to. You may achieve this by Yast, too (add it to bootloader-> kernel options ). Another option is you add net.ipv6.conf.all.disable_ipv6 = 1 and net.ipv6.conf.default.disable_ipv6 = 1 to your /etc/sysctl . Preferred method is you use the command sysctl -w followed by the net.ipv.... and after that sysctl -p to apply the updates to services, ... -------- Ursprüngliche Nachricht -------- Van: joe a <joea-lists@j4computers.com> Aan: users@lists.opensuse.org Onderwerp: Disable IPv6? Datum: 21.01.2024 19:58:19 While chasing other issues, noticed that listing ports in use (open) using socklist shows some services have tcp6 and udp6 listed. This puzzles me as IPv6 is disabled, not checked as enabled, in network config via YAST. I thought that disabled IPv6 entirely? Not so?