I had the same issue after upgrading to 25.7.8, and for some reason unbound DNS wasn't working correctly. If I rebooted my network would come up, my Firestick would get to the homepage, sound would play automatically, and then it would all start dropping off again. Hulu and other apps wouldn't load, then the 'Home is not available, check your network settings' message on the Firestick. Same issue on my hardwired LAN PC. I started migrating to DNSMasq based on reading what some users were saying, and I was having issues getting it working correctly. I'm using TLS via Quad9 with unbound, and I setup the query forward to DNSMasq, configured everything, but was still having issues getting leases assigned with DNSMasq. I could NSlookup, Signal and some apps were working fine on my wired PC, but I couldn't ping out. I didn't want to mess with it anymore as my wife was home from work and wanted to watch Stranger things, so I restored my backup config from July of this year and the issue was completely resolved. Still using unbound with ISC DHCP and am on the 25.7.8 update. The funny thing is that the reason I restored that config was to start over working on the DNSMasq migration thinking I screwed a step up. I wasn't expecting the config restore to resolve the problem that started when I updated. Definitely something getting messed up from the upgrade, putting my old config files back resolved.
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