pfSense

There must be something else to this than just the unresolvable host, I've tried several times to replicate this and have been unsuccessful.

When you tested this, was there anything special about your resolver? Did you use dnsmasq or unbound, or were you configured to query name servers assigned manually or via DHCP?

Reid Linnemann wrote in #note-2:

There must be something else to this than just the unresolvable host, I've tried several times to replicate this and have been unsuccessful.

When you tested this, was there anything special about your resolver? Did you use dnsmasq or unbound, or were you configured to query name servers assigned manually or via DHCP?

Reid,

I was testing with unbound and DNS resolution was functional.

However, I just tried to recreate this on a fresh install of 22.05 RELEASE and I cannot. Last when I was testing this I was on RC4 or 5 and could reproduce it regularly. Not sure what changed or if there was some other circumstance to this that I'm no longer hitting (maybe a package or another remnant of my testing). Where there any changes between the RC and release to the functions here or PHP?

No, none that I am aware of. I know that filterdns has been untouched for a few months now. I'll look for changes elsewhere that could be related.

This has been squirreley for a long time and has been very difficult to reliably duplicate but it is very real. #9296 as stated earlier.

I trust that it is definitely real and not a false or misinterpreted report. There's a reason for it and with enough tenacity I'll find it.