[Dnsmasq-discuss] How to pin IP rage two interface?

bln 77 bln_77 at yahoo.de
Tue Nov 5 18:39:09 GMT 2019


Hi everyone,

I have a 10.1.0.0/16 network.
I want to have clients in the same network because I want to be able to receive IP-broadcast for autodiscovery.
I configured two VLANs and the router has an interface/ip in both:
lan1: 10.1.1.0 with subnet mask 255.255.0.0
lan2: 10.1.2.0 with subnet mask 255.255.0.0

Both interfaces are bridged together and I filter/firewall the traffic with etables rules.
I have a filter that blocks DHCP traffic from being bridged/forwarded.

Now I want to configure dnsmasq to offer the following ranges on the interfaces so I can easily recognise in which net the client belongs:

dhcp-range=set:lan1,10.1.1.50,10.1.2.199,255.255.0.0,12h
dhcp-range=set:lan2,10.1.2.50,10.1.3.199,255.255.0.0,12h

Unfortunately the clients on the second interface also getting an offer from the 10.1.1.x range.

I think both ranges are active on both interfaces?

Is there any way to pin a range to an interface?

Any help is appreciated.


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