15. DBサーバ設定例 (CentOS7) $ sudo su # yum install -y quagga iptables-services tcpdump # echo "ipv6.conf.all.forwarding = 1" > /ite_config 1 # systemctl mask firewalld ; systemctl disable ip6tables # systemctl enable ospf6d ; systemctl start ospf6d # modprobe l2tp_eth # ip l2tp add tu