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Why XG asks not configured DNS servers?

Tomas Beran

Hi,

noticed this behavior:
- XG configured for 3 DNS servers
- on upstream device only those 3 DNS servers are allowed for XG
- occasionally XG sends DNS request to many other DNS servers and these are denied by upstream device
- issue on 18.5.1 and actual 18.5.2 too (observed that on prior versions too)
- XG running as MTA and web proxy only

- when looking to such requests, that were PTR queries only

Not sure what triggers this behavior during operation.

I was able to replicate this behavior when cable was plugged out and then back in to the device.



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  • 0 in reply to LuCar Toni

    I do not know what is triggering it and haven't found anything specific. Today I started seeing the logs after I logged in to GUI to check logs. As I wrote above, even interface down/up can trigger that.

    Noticed too that sometimes it takes few hours of such logs, sometimes just minutes.
    To stop these logs I go in GUI to DNS page and 'apply' the settings again (no change at all).

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