[Dnsmasq-discuss] dnsmasq ignores DHCPDISCOVER

[Simon Kelley]

Rainer Dorsch wrote:
> Hello,
> 
> I have an nslu2 and run Debian etch and dnsmasq as DNS server on it. So far I 
> was also running the ISC dhcp server (version 3).
> 
> To save memory I tried to use dnsmasq as a DHCP server as well. I stopped the 
> dhcp3 server and configured dnsmasq:
> 
> I have in /etc/dnsmasq.conf
> interface=eth0
> listen-address=192.168.1.2  #(does not matter if this is there)
> 
> but in syslog there is no DHCPDISCOVER logged and a dhcp client on that 
> network does not get any response.
> 

Check iptables rules: you need to allows broadcasts to 255.255.255.255 
port 67. dhcpd bypasses the firewall for broadcasts, so it doesn't 
follow that dnsmasq will work when dhcpd does.

Cheers,

Simon.