ISC DHCP dhclient：如何用 IPv4 和 IPv6 地址取代 DNS 名称服务器？

Question

我希望 tp 取代名称服务器信息，这些信息是我使用自己的配置从 DHCP 服务器获取的。因此，我在我的中使用以下选项/etc/dhcp/dhclient.conf：

supersede domain-name-servers 1.1.1.1, 2.2.2.2, 3.3.3.3;

一切正常，但我想添加 IPv6 地址，而且这是双堆栈服务器。以下语句不起作用（我进入/etc/dhcp/dhclient.conf line 56: semicolon expected.系统日志）：

supersede domain-name-servers 1.1.1.1, 2.2.2.2, 3.3.3.3, ::1, 2000::BEEF, FURTHER_IPv6_ADDRESS;

所以我的问题是：如何将 IPv6 地址添加到supersede domain-name-servers中的选项中/etc/dhcp/dhclient.conf？

Answer 1

背景

我找到了隐藏在这个错误中的解决方案，标题为：Bug 643890 - dhclient returns to prepend ipv6 nameservers。

Jiri Popelka 2010-10-18 15:37:46 UTC

(In reply to comment #0)
> prepend domain-name-servers 2001:470:20::2 ;
correct is
prepend dhcp6.name-servers 2001:470:20::2;
(see dhcp-options(5) man page)
but it seems that dhclient is really ignoring it.

I'm trying to figure out what's wrong.

的手册页dhcp-options也显示了它：

   option dhcp6.name-servers ip6-address [, ip6-address ... ] ;

     The  name-servers  option  instructs  clients about locally available 
     recursive DNS servers.  It is easiest to describe this as the "nameserver"
     line in /etc/resolv.conf.

修复示例

因此，在我的客户端上，我添加了以下几行来执行双堆栈（IPv4 和 IP6）：

$ cat /etc/dhcp/dhclient.conf
...
...
## Global section example
prepend domain-name-servers 192.168.7.14,192.168.7.85;
prepend dhcp6.name-servers 2602:6030:dd00:d807::1a11;

## Interface section example
interface "eth0" {
    prepend domain-name-servers 192.168.7.14,192.168.7.85;
    prepend dhcp6.name-servers 2602:6030:dd00:d807::1a11;
}
...
...