Disable on ipv6 on Linux
Edit /etc/default/grub on Debian and add option GRUB_CMDLINE_LINUX_DEFAULT="ipv6.disable=1 ..." grub-mkconfig -o grub.cfg update-grub Edit /etc/sysconfig/grub on Centos and add option GRUB_CMDLINE_LINUX_DEFAULT="ipv6.disable=1 ..." grub2-update