Re: Linux router AP with reserved IPs on wlan0?
Tixy writes:
> On Sat, 2021-02-06 at 11:00 -0800, John Conover wrote:
> > Stefan Monnier writes:
> > > > A wireless router made with hostapd/dnsmasq/dhcpcd is fairly easy, and
> > > > works well with iptables, with one shortcoming.
> > > >
> > > > After antagonizing the Google for hours, I can not find any way to add
> > > > reserved IPs based on the the MAC address of devices connected on
> > > > wlan0, (presumably in dhcpcd.conf.) Seems kind of a simple oversight
> > > > for a wireless AP.
> > >
> > > I'm not familiar with dhcpd, but dnsmasq's built-in DHCP server has been
> > > perfectly sufficient so far and it lets you specify fixed IPs based on
> > > MACs by simply putting those in the `/etc/ethers` file.
> > >
> >
> > Thank you, Stefan.
> >
> > Works like a charm. The syntax of /etc/ethers is ':' delimited MAC
> > address, followed by a space delimiter, followed by the IPv4 IP
> > address, per IP reservation. That IP address must also be in
> > /etc/hosts.
>
> I didn't know about /etc/ethers, on my system I allocate fixed IP
> addresses and hostnames by adding a lines to dnsmasq.conf like
>
> dhcp-host=MAC-Address,IP-Address,Hostname,Lease-Time
>
> I guess there's more than one way to skin this cat.
>
Hi Tixy.
For the archives, the documentation to configuration of dnsmasq(1) is
in /etc/dnsmasq.conf, the dnsmasq configuration file. It is verbose,
and there are many options. Read thoroughly.
It is a very impressive accomplishment, and works well, and is fairly
easy to get working, (once familiar with the configuration file.)
As a closing note, the DHCP/DNS services, (for wlan0,) are configured
in the /etc/dnsmasq.conf file, *_NOT_* /etc/dhcpcd.conf, which is the
usual alternative.
(This is where I went astray-I mean the name is dnsmasq, probably
meaning it is something to do with dns, duh.)
Thanks to all,
John
--
John Conover, conover@rahul.net, http://www.johncon.com/
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