DHCP IPv6

網頁：https://www.isc.org/software/dhcp/

手動安裝方式：
安裝版本：DHCP 4.2.5-P1
系統環境：CentOS 6.4
環境需求：

yum install gcc

安裝方式：

#./configure
#make
#mkae install

執行檔位置：/usr/local/sbin/dhcpd
設定檔位置：/usr/local/etc/dhcpd.conf 
( 如果同一台機器同時提供IPv6和IPv4的dhcpd服務，執行檔同一支daemon， 但設定檔要分開 )

執行指令：

• IPv6

dhcpd -6 -cf /etc/dhcpd6.connf

• IPv4

dhcpd -4 -cf /etc/dhcpd.connf

yum 方式安裝：
安裝版本：DHCP 4.1.1
系統環境：CentOS 6.4
安裝方式：

yum install dhcp

 設定檔位置：

• IPv4

/etc/dhcp/dhcp.conf

• IPv6

/etc/dhcp/dhcp6.conf

服務啟動 ：

•  IPv4

service dhcpd start

• IPv6

service dhcpd6 start

說明：

dhcpd和dhcpd6 的啟動的script 中，透過指令"diff /etc/init.d/dhcpd  /etc/init.d/dhcpd6"可以看到兩者都是透過dhcpd 執行 ，差別在於執行的參數( -4和 -6 )和設定檔的不同。

dhcpd6 的script 中 lease 檔案位於 /var/lib/dhcpd/dhcpd6.lease ，如果要放到/var/db 下 要修正 script內容。

範例 sample位置 ：

/usr/share/doc/dhcp*/dhcpd6.conf.sample

default-lease-time 2592000;
preferred-lifetime 604800;
option dhcp-renewal-time 3600;
option dhcp-rebinding-time 7200;
allow leasequery;

option dhcp6.name-servers 3ffe:501:ffff:100:200:ff:fe00:3f3e;
option dhcp6.domain-search "test.example.com","example.com";
option dhcp6.info-refresh-time 21600;
dhcpv6-lease-file-name "/usr/local/var/db/dhcpd6.leases";

host myclient {
        host-identifier option
                dhcp6.client-id 00:01:00:01:00:04:93:e0:00:00:00:00:a2:a2;
        fixed-address6 3ffe:501:ffff:100::1234;
        fixed-prefix6 3ffe:501:ffff:101::/64;
        option dhcp6.name-servers 3ffe:501:ffff:100:200:ff:fe00:4f4e;
}

host otherclient {
        hardware ethernet 01:00:80:a2:55:67;
        fixed-address6 3ffe:501:ffff:100::4321;
}
subnet6 3ffe:501:ffff:100::/64 {
        range6 3ffe:501:ffff:100::10 3ffe:501:ffff:100::11;
        range6 3ffe:501:ffff:100:: temporary;
        prefix6 3ffe:501:ffff:100:: 3ffe:501:ffff:111:: /64;
}

subnet6 3ffe:501:ffff:101::/64 {
        range6 3ffe:501:ffff:101::10 3ffe:501:ffff:101::11;
        option dhcp6.name-servers 3ffe:501:ffff:101:200:ff:fe00:3f3e;
}

subnet6 3ffe:501:ffff:102::/64 {
        range6 3ffe:501:ffff:102::10 3ffe:501:ffff:102::11;
}

DHCPv6 message

DHCPv6 message

DHCPv6 server log

 dhcpd: Internet Systems Consortium DHCP Server 4.1.1-P1
 dhcpd: Copyright 2004-2010 Internet Systems Consortium.
 dhcpd: All rights reserved.
 dhcpd: For info, please visit https://www.isc.org/software/dhcp/
 dhcpd: Wrote 0 deleted host decls to leases file.
 dhcpd: Wrote 0 new dynamic host decls to leases file.
 dhcpd: Wrote 0 leases to leases file.
 dhcpd: Bound to *:547
 dhcpd: Listening on Socket/5/eth0/2001:288:2274:5::/64
 dhcpd: Sending on   Socket/5/eth0/2001:288:2274:5::/64
 dhcpd: Solicit message from fe80::853b:3223:1d42:98b4 port 546, transaction ID 0xA791A600
 dhcpd: Sending Advertise to fe80::853b:3223:1d42:98b4 port 546
 dhcpd: Request message from fe80::853b:3223:1d42:98b4 port 546, transaction ID 0xA791A600
 dhcpd: Sending Reply to fe80::853b:3223:1d42:98b4 port 546