Question: will DNS error trigger forwarder disable too?

[xlighting2017]

now we have the ability to detect an error(maxFailure), but I'm wondering if the DNS forward/Query error will increase the failure counter, and ultimately disable a forwarder?

my test shows it will not, but DNS failure will also block the user from using the Internet correctly...

[nadoo]

Hi @xlighting2017 , if there's no forwarder, or only 1 forwarder specified, glider will not count the failure times because there's no need to disable a forwarder.

If there are 2 forwarders or more, then glider will increase the failure counts when a tcp dial failed, the count will be increased when we can not get a valid tcp connection to dns server.

If we can connect dns server in tcp via forwarder successfully, but there are some errors in dns message format parsing, then maybe we have some problems in compatibility or settings, we should improve dns parsing functions or use a new dns server, so the failure count will not be increased.

[xlighting2017]

Thanks for the details!