ubuntu18.04搭建dhcpv6服务及配置文件详解

四、安装ipv6 dhcpv6服务器

1. 安装服务

sudo apt install isc-dhcp-server

 

2. 修改配置文件

　　2.1 修改配置文件/etc/default/isc-dhcp-server

 　　2.2 添加配置文件/etc/dhcp/dhcpd6.conf，添加地址池，内容如下

default-lease-time 600;
max-lease-time 7200; 
log-facility local7; 
subnet6 2201:db8:0:1::/64 {
        # Range for clients
        range6 2201:db8:0:1::129 2201:db8:0:1::254;

        # Range for clients requesting a temporary address
        range6 2201:db8:0:1::/64 temporary;

        # Additional options
        option dhcp6.name-servers fec0:0:0:1::1;
        option dhcp6.domain-search "domain.example";

        # Prefix range for delegation to sub-routers pd
        prefix6 2201:db8:0:100:: 2201:db8:0:f00:: /56;


}

　　2.3 创建文件 /var/lib/dhcp/dhcpd6.leases

touch /var/lib/dhcp/dhcpd6.leases

chown dhcpd:dhcpd /var/lib/dhcp/dhcpd6.leases

　　2.4 开启dhcpv6转发，修改文件/etc/sysctl.conf，去除net.ipv6.conf.all.forwarding=1前的注释#

 

　　2.5 设置转发立即生效

sudo sysctl -p 

　　2.6 写入iptables6规则

sudo ip6tables -t nat -A POSTROUTING -s 2201:db8:0:1/64 -o ens33 -j MASQUERADE 
# 注意：上述规则重启后失效，需要重新添加，ens33为实际出口网卡

 

3. 开启服务

sudo systemctl start isc-dhcp-server6

 

4. 验证服务

sudo systemctl status isc-dhcp-server6

 

5. 配置文件详解

　　5.1 /etc/default/isc-dhcp-server

　　5.2 /etc/dhcp/dhcpd6.conf 

 　　5.3 /lib/systemd/system/isc-dhcp-server6.service