[Dnsmasq-discuss] dnsmasq does not forward requests with no default route is set

[Simon Kelley]

Is there a route in the kernel to <upstream resolver> that works when 
the default route is not present?

the @ppp2 syntax sets SO_BINDTODEVICE on the socket used to talk 
upstream, but that's not going to work unless there's a route.


Simon.

On 30.12.2025 07:04, Luigi Baldoni via Dnsmasq-discuss wrote:
>    Hello,
> before stating the obvious, this happens when server=<upstream resolver>@ppp2 is set.
> 
> On my system I have concurrent ppp connections, each used independently.
> If ppp0 is down or a default route through it is not set, dnsmasq won't forward queries to
> the upstream resolver, even though it seems to use only ppp2 in normal conditions. At least
> that's what tcpdump shows.
> 
> Any idea what's happening? I could try using uid-based policy routing I suppose, but I don't
> get why this would be necessary.
> 
> Regards
> 
> 
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