I think I can add more info on the DNS…
- I’ve had issues streaming content with Amazon FireTV and GoogleTV when they have IPv6 address for some time. Since 6.48 at least.
- The issue is present on 6.48.1 (just tested today) and 7.7beta6.
- I have 8.8.8.8 and 2001:4860:4860::8888 as my upstream resolvers.
- Disabling IPv6 on the LAN solves the issue.
- Sending 2001:4860:4860::8888 instead of the MTs address as the DNS server in my LAN RAs solves the issues.
- As mentioned in previous posts, the only difference I see in responses between external resolvers and the MT is the lack of SOA record.
- As mentioned in previous posts, I DO see the SOA records in the cache.
- Now, get this… Using DoH (https://dns.google/dns-query) as the upstream resolver ALSO SOLVES THE ISSUE. I see the SOA record when querying the MT.