vi /etc/named.conf
filter-aaaa-on-v4 yes;
named-checkconf /etc/named.conf
vi /etc/sysconfig/named
OPTIONS="-4"
systemctl restart named-chroot
systemctl status named-chroot
vi /etc/named.conf
filter-aaaa-on-v4 yes;
named-checkconf /etc/named.conf
vi /etc/sysconfig/named
OPTIONS="-4"
systemctl restart named-chroot
systemctl status named-chroot