[ray_308]

Router: WRT3200ACM
Firmware: SS-WRT v3.0-r41954

Setup -> Basic Setup -> Network Setup
Only 26 clients can connect, the other clients are served through static lease.

Static and dhcp leases are in the same network (10.0.1.x. 255.255.255.0) static from 1 to 174, dhcp pool from 175 to 200.

Static lease under Service -> Service is working fine.
When the client is unknown, it gets an IP from the dhcp pool.
So far so good.

When I make a change tot the “additional Dnsmasq Options” something funny is happening;

I’m adding the following rules to additional Dnsmasq Options;

dhcp-host=XX:XX:XX:XX:XX:XX,set:cloudflareDNS
dhcp-option=6,10.0.1.174
dhcp-option=tag:cloudflareDNS,option:dns-server,1.1.1.1,1.0.0.1

So al clients from static and dhcp pool get the DNS address 10.0.1.174, only one device with the correct MAC address gets the DNS address 1.1.1.1 and 1.0.0.1.

The client with the corresponding MAC adres is getting the right DNS settings, BUT is getting an IP address from the dhcp pool and NOT from the static lease list.

When I add an # in front of the dhcp-host line, the client is getting an IP from the static lease and off course not the correct DNS settings.

I’m clueless what I’m doing wrong, any ideas?

[Per Yngve Berg]

You have to set the static IP address on the dhcp-host

--dhcp-host=[<hwaddr>][,id:<client_id>|*][,set:<tag>][,<ipaddr>][,<hostname>][,<lease_time>][,ignore]
Specify per host parameters for the DHCP server. This allows a machine with a particular hardware address to be always allocated the same hostname, IP address and lease time. A hostname specified like this overrides any supplied by the DHCP client on the machine. It is also allowable to omit the hardware address and include the hostname, in which case the IP address and lease times will apply to any machine claiming that name. For example --dhcp-host=00:20:e0:3b:13:af,wap,infinite tells dnsmasq to give the machine with hardware address 00:20:e0:3b:13:af the name wap, and an infinite DHCP lease. --dhcp-host=lap,192.168.0.199 tells dnsmasq to always allocate the machine lap the IP address 192.168.0.199.

[ray_308]

I removed the static lease from the list at services -> services and add the client to the dhcp-host like this;

dhcp-host=DC:56:E7:89:xx:xx,notebook-raymond,infinite
dhcp-host=notebook-raymond,10.0.1.120
dhcp-host=DC:56:E7:89:xx:xx,set:cloudflareDNS
dhcp-option=6,10.0.1.174
dhcp-option=tag:cloudflareDNS,option:dns-server,1.1.1.1,1.0.0.1

The client whit MAC DC:56:E7:89:xx:xx is getting the right dns settings, but still an IP address from the dhcp pool instead of the dhcp-host option (10.0.1.120).

I think that I'm doing something wrong, but can't find out what..

[ray_308]

solved

see https://forum.dd-wrt.com/phpBB2/viewtopic.php?t=322797&highlight=