Unbound VERY frequent restarts (DNS Resolver Restarts)



  • Nothing that I do will stop these restarts, I'm running the latest version 2.4.4-RELEASE-p3 (amd64)
    As you can see my DNS resolver is restarting every 2-3 seconds non stop
    d02ddfc4-cf43-490e-ad0f-dbeee4b4ecb6-image.png

    I've disabled DHCP registration and it's still happening.
    6ef1b70c-677f-4555-a39e-e580a816ada2-image.png



  • I finally figured out why my DNS resolver was restarting every 2 seconds, it was because my WAN interface had a IPv6 address which appears to be some kind of pfSense bug, as soon as I remove the IPv6 from the WAN interface it stopped restarting the Unbound resolver:

    As you can see below I changed it from DHCP6 to None:
    aba72dc2-e077-4562-9d57-3695d9de23cc-image.png



  • I can confirm this behavior. Also when having pfBlockerNG enabled while this bug occurs, unbound is not usable anymore.
    Turning off IPv6 also fixed it for me.
    Using pfSense in a VM with a Ryzen 3950x running 2.4.4-RELEASE-p3 (amd64)



  • I don't see this. I have WAN IPv6 set to "DHCP6" and the current pfBNG-devel on Comcast. Were you using "Static IPv6"?



  • Nope I was using DHCP6 as stated above, and changing it to None resolved the issue I've been having for many months.


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