DNS Resolver stops resolving Domain Overrides until restarted

  • I have a Docker running OpenDNS. It's a fairly simple configuration.

    This Docker lives behind IPSEC tunnel through which my pfSense can reach it. This was setup and configured and it works.

    In DNS resolver I have 41 Host Overrides and 3 Domain Overrides for. At all times the Host Overrides operate fine. However every 5 to 15 minutes the Domain Overrides stop working. The Firewall will not resolve any hosts in those domains for itself or for other hosts. Once DNS Resolver is restarted, the Domain Overrides work again for 5 to 15 minutes.

    Any ideas where to start digging? I did not see anything special in logs on pfSense.

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