dnsmasq dhcp-option=option6:23

这是在dnsmasq DHCP服务器中设置DHCPv6 Option23的选项，用于指定IPv6的最大传输单元（MTU）。这个选项可以让DHCPv6客户端根据DHCPv6服务器提供的MTU大小来设置自己的IPv6 MTU大小。在dnsmasq中，可以使用dhcp-option=option6:23配置选项23，并将其值设置为所需的MTU大小。例如：dhcp-option=option6:23,1500可以将MTU大小设置为1500字节。

相关问题

dnsmasq dhcp

Dnsmasq是一种轻型的DNS和DHCP服务器，可以在Linux、Unix和Windows等平台上运行。它被广泛用于家庭和小型办公室网络中，因为它易于设置和使用，占用资源较少，而且支持DHCP、TFTP、PXE、DNS缓存、DHCPv6、IPv6路由广告等功能。

在Dnsmasq中，DHCP可以为客户端分配IP地址、子网掩码、网关、DNS服务器等信息，也可以设置租约时间、IP地址池、静态IP地址分配等选项。Dnsmasq还支持DHCP选项、MAC地址过滤、DHCP日志等高级功能。

要启用Dnsmasq的DHCP功能，需要在配置文件中设置dhcp-range选项来定义IP地址池的范围，dhcp-option选项来定义DNS服务器和默认网关等选项，然后启动Dnsmasq服务即可。例如，在Ubuntu中，可以通过修改/etc/dnsmasq.conf文件来设置DHCP选项，然后通过sudo service dnsmasq restart命令重启Dnsmasq服务。

dnsmasq dhcp ipv6

Dnsmasq is a lightweight DNS and DHCP server software that can be used to provide IPv6 addresses to clients via DHCPv6. Here are the basic steps to configure Dnsmasq to provide IPv6 addresses to clients:

1. Install Dnsmasq on your server.
2. Edit the Dnsmasq configuration file (/etc/dnsmasq.conf) and add the following lines to enable DHCPv6:

dhcp-range=::100,::1ff,constructor:eth0,ra-names,slaac
enable-ra

The first line sets the range of IPv6 addresses to be assigned to clients. The "constructor:eth0" option specifies that the IPv6 addresses should be assigned to clients on the eth0 interface. The "ra-names" option tells Dnsmasq to include the clients' hostnames in the Router Advertisement messages. The "slaac" option enables Stateless Address Autoconfiguration, which allows clients to generate their own IPv6 addresses based on the prefix advertised by the router. The second line enables Router Advertisement messages, which tell clients about the network's IPv6 prefix and other configuration information.

3. Restart the Dnsmasq service to apply the changes:

sudo systemctl restart dnsmasq

4. Configure your router to advertise the IPv6 prefix assigned to your network by Dnsmasq. This will allow clients to automatically configure their IPv6 addresses.

With these steps, you should have a working DHCPv6 server on your network, providing IPv6 addresses to clients.