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在 /etc/dhcpcd.conf 中配置静态值

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在 /etc/dhcpcd.conf 中配置静态值

/etc/dhcpcd.conf文件中静态选项的有效值是什么（以及它们的用途） ？

我正在通过编辑文件来配置 Raspberry（运行 raspbianstretch）的网络接口/etc/dhcpcd.conf。
尽管我能够正确设置它，但我很好奇通过该文件提供的所有配置选项，特别是静态配置。

我阅读了 dhcpcd.conf 的手册页，但没有找到静态选项接受的值的任何解释。我在谷歌上也找不到任何东西。

这dhcpcd.conf 的手册页只是这样说：

 static value
         Configures a static value.  If you set ip_address then dhcpcd
         will not attempt to obtain a lease and will just use the value
         for the address with an infinite lease time.  If you set
         ip6_address, dhcpcd will continue auto-configuation as normal.

         Here is an example which configures two static address,
         overriding the default IPv4 broadcast address, an IPv4 router,
         DNS and disables IPv6 auto-configuration.  You could also use the
         inform6 command here if you wished to obtain more information via
         DHCPv6.  For IPv4, you should use the inform ipaddress option
         instead of setting a static address.
               interface eth0
               noipv6rs
               static ip_address=192.168.0.10/24
               static broadcast_address=192.168.0.63
               static ip6_address=fd51:42f8:caae:d92e::ff/64
               static routers=192.168.0.1
               static domain_name_servers=192.168.0.1
               fd51:42f8:caae:d92e::1

         Here is an example for PPP which gives the destination a default
         route.  It uses the special destination keyword to insert the
         destination address into the value.
               interface ppp0
               static ip_address=
               destination routers

阅读一些教程后，我知道的所有有效选项如下：

  • IP地址

  • 路由器

  • 域名服务器

  • 域名搜索

  • 域名

JFYI 我的 /etc/dhcpcd.conf 配置文件如下所示：

# Inform the DHCP server of our hostname for DDNS.
hostname
# Use the hardware address of the interface for the Client ID.
clientid
# Persist interface configuration when dhcpcd exits.
persistent
# Rapid commit support.
# Safe to enable by default because it requires the equivalent option set
# on the server to actually work.
option rapid_commit
# A list of options to request from the DHCP server.
option domain_name_servers, domain_name, domain_search, host_name
option classless_static_routes
# Most distributions have NTP support.
option ntp_servers
# A ServerID is required by RFC2131.
require dhcp_server_identifier
# Generate Stable Private IPv6 Addresses instead of hardware based ones
slaac private
# A hook script is provided to lookup the hostname if not set by the DHCP
# server, but it should not be run by default.
nohook lookup-hostname

# Static IP configuration for eth0.
interface eth0
    static ip_address=192.168.12.234/24
    static routers=192.168.12.1
    static domain_name_servers=192.168.12.1
    nogateway

答案1

我也有同样的疑问，但也没有找到任何明确的答案，所以我开始深入研究。

我不知道这是否是一个详尽的列表，但这里是static我能够通过查看源代码（可用）收集的选项的有效值列表这里）：

ip_address
subnet_mask
broadcast_address
routes
static_routes
classless_static_routes
ms_classless_static_routes
routers
interface_mtu
mtu
ip6_address

这些参数直接在if-options.c文件中处理。

这是我不太确定它是否详尽的地方，也是我对正在发生的事情进行一些推测的地方。您肯定注意到了，这不包括domain_name_servers等。在解析配置文件并直接处理上述任何参数之后，仍然可能有一些参数尚未在 中处理if-options.c。我认为这些剩余的参数是在默认的钩子脚本中处理的，特别是 20-resolv.conf 钩子脚本（/usr/lib/dhcpcd/dhcpcd-hooks），我认为只有以下选项：

domain_name
domain_name_servers
domain_search

正如我所说，我对最后一点有点不确定，因为我不想花大量的时间来浏览源代码。因此，任何更正都将非常受欢迎。

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