All my SDK-based actions also stopped working yesterday, which seems related. I'll be very curious to know what happened, as I thought everything should be running locally.

@Emil sorry, that was a pre-coffee morning typo, I meant DNS, not DSN.

I didn't know .local was reserved for mDNS only, as it has been working fine so far. Thanks! I should be able to solve the issue from here.

I woke up today to my Flic setup not working. After quite a bit of debugging, I found out that the issue seems to be with DNS: I have a local DSN configured over DHCP, which has some *.home.local addresses set up for the local services, and I'm triggering HTTP requests to a local service from my buttons. If I try executing a web request in the SDK to one of those addresses, I get a DnsResolveFailed error, while if I use the IP address directly, it works.

This change happened last night, while I was asleep. Could it be some update with a regression? My Hub version is 4.2.4.

I also did try the good old rebooting of both the Hub and my router, to no avail.