[Dnsmasq-discuss] How to set no gateway

[Donald Muller]

> -----Original Message-----
> From: Dnsmasq-discuss <dnsmasq-discuss-bounces at lists.thekelleys.org.uk>
> On Behalf Of Geert Stappers
> Sent: Friday, February 24, 2023 4:18 PM
> To: dnsmasq-discuss at lists.thekelleys.org.uk
> Subject: Re: [Dnsmasq-discuss] How to set no gateway
> 
> On Fri, Feb 24, 2023 at 04:54:28AM +0000, Donald Muller wrote:
> >
> > I have two networks. One is a 1GB routable network. The other is a 2.5GB
> > private, non-routable network. The DHCP server (dnsmasq) is attached
> > to both networks and all addresses are assigned via DHCP. The address
> > on the private network all have reservations. DHCP is working fine
> > and addresses are properly assigned. The issue I am having is that I
> > don't want the private network to have a default gateway. Is there a
> > way via DHCP to tell the client to net set a default gateway when the
> > IP configuration information is sent?
> 
> Usually, if not always, goes default gateway in the reply DHCP packets.
> 
> For the "private network"  play with configuring 0.0.0.0  or a
> non-existing host on that network as default gateway.
> 

I tried 0.0.0.0 and before I discovered that the man page states - "The special address 0.0.0.0 is taken to mean "the address of the machine running dnsmasq"."

Matus UHLAR provide the solution by specifying 

DHCP-OPTION=3

With no parameters.


> 
> > This may or may not be a dnsmasq question/issue.
> 
> Please make it a dnsmasq thingy by reporting what works for you.
> 
> 
> > If not, sorry for the noise.
> 
> Just transmit what you consider as a valid message
> and let the recieving end decide whether it is noise.
> 
> 
> Groeten
> Geert Stappers
> --
> Silence is hard to parse
> 
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