[Dnsmasq-discuss] Re: Multiple mac addresses to one ip

Aaron D. Brooks aaron.brooks at sicortex.com
Fri Aug 17 18:40:58 BST 2007


Joshua is right, you can do this by specifying the same client ID for
your DHCP client. Usually your client ID defaults to the MAC address
but most DHCP clients allow you to override this. ("dhcpcd -I
<CLIENTID>...", "udhcpc -c <CLIENTID>", I don't think pump can pass
a specified client ID.)

Assigning IP address based on requested hostname would work some of
the time but, since you'd likely switch between the wired / wireless
networks before the lease times out, you'd hit points where you
wouldn't be able to acquire the lease. Client ID trumps all lease
association mechanisms, including MAC address (though you don't
normally notice this since the client ID _is_ the MAC address by



Aaron Brooks - Senior Software Engineer
http://SiCortex.com - Teraflops from Milliwatts

On Fri, Aug 17, 2007 at 09:15:40AM -0800, Joshua J. Kugler wrote:
> On Friday 17 August 2007 08:06, Yaakov Nemoy wrote:
> > Hi list,
> >
> > I've just recently discovered dnsmasq through openwrt.  I'm trying to
> > setup my laptop to get the same IP for dns reasons no matter wether I
> > use the ethernet or wireless card.  I have two MAC addresses set to
> > the same IP in /etc/ethers in the following order:
> >
> > 00:18:de:20:9a:c5
> > <snip>
> > 00:E0:B8:AE:40:5F
> >
> > the first line is the wireless and the second line is the ethernet.
> > dnsmasq seems to honour the second line in ethers but not the first
> > line.  is there a way to configure it to honour both?
> I'm not sure if that's possible, but what you may be able to do is use your 
> client name to set your IP.  I don't remember how to do it off the top of my 
> head, but I'm pretty sure it can be done that way.  Look in the docs for more 
> info.
> j
> -- 
> Joshua Kugler                           
> Lead System Admin -- Senior Programmer
> http://www.eeinternet.com
> PGP Key: http://pgp.mit.edu/  ID 0xDB26D7CE
> PO Box 80086 -- Fairbanks, AK 99708 -- Ph: 907-456-5581 Fax: 907-456-3111
> _______________________________________________
> Dnsmasq-discuss mailing list
> Dnsmasq-discuss at lists.thekelleys.org.uk
> http://lists.thekelleys.org.uk/mailman/listinfo/dnsmasq-discuss

More information about the Dnsmasq-discuss mailing list