An XCCDF Group - A logical subset of the XCCDF Benchmark
ipv6.disable=1
/etc/default/grub
GRUB_CMDLINE_LINUX="... ipv6.disable=1 ..."
# grubby --update-kernel=ALL --args="ipv6.disable=1"
ipv6
/etc/modprobe.d/disabled.conf
/etc/modprobe.d
options ipv6 disable=1
/etc/sysctl.d/ipv6.conf
/etc/sysctl.d
net.ipv6.conf.all.disable_ipv6 = 1
net.ipv6.conf.default.disable_ipv6 = 1