Unbound issue when set in resolving mode (pfSense Plus - crashing?)
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I have a pfSense setup with following configuration related to the problem I have:
- Unbound used as DNS resolver
- pfBlockerNG installed, active and set in python mode
- Firewall rules to redirect client DNS queries to pfSense (i.e. no bypass allowed)
- pfSense connected to a modem via PPPoE (legacy driver in use)
I happily used pfSense set with internal DNS resolution as primary and back off to external DNS resolver (default setting), but since a while (I can't track down if happened across a version change or a setting change) it happens pfSense stops resolving DNS queries leading to websites being unreachable.
If I restart unbound service it starts working again for 3-4h, then it happens again.
If I set unbound in forwarding mode and pfSense general config to ignore local DNS resolution everything works fine for weeks.I inspected unbound logs but without any luck (maybe due to limited understanding) finding nothing suspicious.
pfSense is plus version, running on a VM in proxmox.
Can anyone have any hints of what is going on or can suggest further info I can provide/search to understand the issue?