On 06.03.22 07:22, Alkis Georgopoulos wrote:
aren't bind-dynamic and bind-interfaces for people that have multiple services in the 53 port?

It does not matter here. There may and may not be other programs, dnsmasq or not, listening on 53 port on different interfaces.

I have a single dnsmasq running, and it's listening on 0.0.0.0:53, i.e. on "all interfaces", shouldn't it be answering?

not if you configure it only to listen on specific interfaces.
Without --bind-interfaces dnsmasq sits on 0.0.0.0 but only answers on interfaces it is configured to listen on.

I think it's a wrong initialization bug somewhere in the code that decides when dnsmasq should answer. Configuration workarounds do exist, but I feel that it's a bug that should be resolved by updating the dnsmasq codebase.

this is the standard dnsmasq behaviour when new interface appears and you don't specify --bind-dynamic to detect them.

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