Why does Homey Pro query DNS (internal) for SOA (source of authority) of domain "local"

Questions & Help
1

Dear all,

I love Homey, let’s start with this first!
But I also love my pi-hole :slight_smile:

I see Homey asking my dns, for about 2 times a minute, who the SOA is for domain “local”
And this is filling up my query logs.

So I have these questions:

Is there a setting in Homey, were I gave it a domain name of “local”?
Is this a setting of Homey that can be changed or is it hard-coded?
Why is my Homey doing this?

Hope someone can help me, finding the answers to my questions.

Thanks all, for your time and effort,

With kind regards,

2

Not specifically, but Homey will present itself on the local network as “Homey-XXX.local” to allow for autodiscovery.

It’s hardcoded.

My guess is that it’s an underlying piece of system software running on Homey, like the Avahi/mDNS daemon. It’s fairly common for OS’s to do regular SOA probes (there’s probably a good reason for it), but it’s not something you can disable.

1 Like
3

Not sure if I’m supposed to do this - but anyhow:
I have noticed this with dnsmasq as well - and it does this a lot - every few seconds (see below)!
The homey pro device as ip 192.168.230.210.

If I let dnsmasq forward these to 127.0.0.1:5353 (i.e. avahi)) then nothing happens - other then repeating the same request over-and-over.

Similar when forwarding these to 127.0.0.1 (i.e. dnsmasq) then dnsmasq responds with nxdomain - after which the request is repeated.

If I let dnsmasq be the authorative server for the local-domain by creating a soa config which points to 127.0.0.1 (i.e. dnsmasq) it starts asking for A and AAAA records of a gateway, appending all domains homey pro is aware of (i.e. local and domotica.lan). This is then also repeated over-and-over.

Jun 15 19:41:12 dnsmasq[24793]: query[SOA] local from 192.168.230.210
Jun 15 19:41:12 dnsmasq[24793]: auth local is <SOA>
Jun 15 19:41:12 dnsmasq[24793]: query[A] gateway-2077-6072-7122.local from 192.168.230.210
Jun 15 19:41:12 dnsmasq[24793]: auth gateway-2077-6072-7122.local is NXDOMAIN
Jun 15 19:41:12 dnsmasq[24793]: query[AAAA] gateway-2077-6072-7122.local from 192.168.230.210
Jun 15 19:41:12 dnsmasq[24793]: auth gateway-2077-6072-7122.local is NXDOMAIN
Jun 15 19:41:12 dnsmasq[24793]: query[A] gateway-2077-6072-7122.local.domotica.lan from 192.168.230.210
Jun 15 19:41:12 dnsmasq[24793]: cached gateway-2077-6072-7122.local.domotica.lan is NXDOMAIN
Jun 15 19:41:12 dnsmasq[24793]: query[AAAA] gateway-2077-6072-7122.local.domotica.lan from 192.168.230.210
Jun 15 19:41:12 dnsmasq[24793]: cached gateway-2077-6072-7122.local.domotica.lan is NXDOMAIN

Jun 15 18:00:05 dnsmasq[16096]: query[SOA] local from 192.168.230.210
Jun 15 18:00:14 dnsmasq[16096]: query[SOA] local from 192.168.230.210
Jun 15 18:00:22 dnsmasq[16096]: query[SOA] local from 192.168.230.210
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