Is there a way to configure within Unbound a backup resolver for all queries that take over 5 seconds for example ?
Aka, I'd like to forward to 8.8.8.8 all queries that I can't resolve for whatever reason: network issues, firewalls, etc. For example: dig +trace 77.184.100.61.in-addr.arpa This sometimes takes 10 seconds to resolve, other times it times out completely but 8.8.8.8 can return an answer within 1 second. I also don't want to implement a per-host/network/domain solution, I just want to forward all queries that take longer than 5 seconds. Is it possible or is there an alternative ? Thank you