[Dnsmasq-discuss] dnsmasq not overriding leases for static assigments

[Geert Stappers]

On Sun, May 16, 2021 at 06:48:59PM +0100, Jesus M Diaz wrote:
> > >
> > > So, this is how the identification happens and I can know it did happen
> >
> > More like
> > } So, this is how the identification should happen and I hope it did happen
> >
> >
> well, setting the tag 'mobile' and 'known' means dnsmasq found it in the
> config file, that is a good hint to assume it was identified ;-)
> 
> 
> >
> > > > >    assigns a new ip-addr because the old one is in use.
> > > >
> > > > Which is good.
> > > >
> > > Unless in the dnsmasq man page it is said:
> > >
> > > -G, --dhcp-host=[<hwaddr>][,id:<client_id>|*][,set:<tag>][tag:<tag>][,<ipaddr>][,<hostname>][,<lease_time>][,ignore]
> >
> > }   dhcp-host=set:mobile,*:*:*:63:ea:55,samsungA30s
> >
> > Note that the 'set:' is before '<hwaddr>'
> >
> >
> well, you are right, and that could mean something, let me try changing the
> line in the configuration file to:
> 
> dhcp-host=*:*:*:d0:4d:e3,set:mobile,xiaomi-a2
> 
> and ... it doesn't work, exactly the same situation than before, and the
> two leases can be seen:
> 
>   [20210516-181226] 192.168.0.232   / a4:50:46:d0:4d:e3 xiaomi-a2
>   [20210516-180445] 192.168.0.222   / 96:8d:d4:d0:4d:e3 *
> 
> the lease with a name is the new one, so, a new hint dnsmasq identifies the
> client and set the configured name removing it from the previous lease ...
> but assigns a new ip-addr
> 
   [ ... ]
> > > both wired and wireless interfaces.
> > > In this case, the behaviour is not the expected, hence, cannot be good.
> >
> > I think some pieces of the puzzle are missing.
> >
> >
> >
> > > And this is my only point. I am not arguing if tp-link one-mesh
> > > access-points are doing well by changing the client mac-address, nor if I
> > > am being smart or stupid using wildcards to identify dhcp-clients, nor if
> > > my whole configuration makes sense. The only point is why dnsmasq is not
> > > abandoning the previous lease if the man page says it would do it.
> >
> > IIRC was on the mailinglist in the last six months a "works for me" report
> > about switching from ethernet to WIFI and keeping IPv4 address.
> >
> >
> That's interesting, I will search those posts.

Please do.

 
> Thanks for the ideas!

AIUI are more ideas needed.

 
> Jesus M



Groeten
Geert Stappers
-- 
Silence is hard to parse