If your YUM update is broken please try the following command to fix the issue:sysctl -w net.ipv6.conf.all.disable_ipv6=1sysctl -w net.ipv6.conf.default.disable_ipv6=1yum update -ysysctl -w net.ipv6.conf.all.disable_ipv6=0sysctl -w net.ipv6.conf.default.disable_ipv6=0reboot