[Dnsmasq-discuss] how to split the resolution between networks?

[Simon Kelley]

On 29/07/12 18:22, Wojtek Swiatek wrote:
> Hello,
>
> I have two networks (wired on eth0 (192.168.0.10)  and wireless on
> wlan3 (192.168.1.10)) routed by a server which also runs dnsmasq. I
> need the name "server" to be resolved as 192.168.0.10 from the wired
> network and as 192.168.1.10 from the wireless one.
> I currently have
> 192.168.0.10 server.home
> in /etc/hosts and it works but the traffic to the server when going
> from wireless transits through the wired. This is not a huge issue but
> it would be better if the name  was resolved in both ways.
>

This is what you need: from "man dnsmasq"

y, --localise-queries
     Return answers to DNS queries from /etc/hosts  which  depend  on
     the  interface  over  which the query was received. If a name in
     /etc/hosts has more than one address associated with it, and  at
     least one of those addresses is on the same subnet as the inter‐
     face  to  which  the  query  was  sent,  then  return  only  the
     address(es)  on  that  subnet. This allows for a server  to have
     multiple addresses in /etc/hosts corresponding to  each  of  its
     interfaces,  and  hosts  will  get  the correct address based on
     which network they are attached to. Currently this  facility  is
     limited to IPv4.



Cheers,

Simon.