Filterdns has stopped resolving hostnames in firewall aliases

[ohbobva]

@SteveITS This has been an issue for me for YEARS. But it only crops up every so often (like today). It's long enough apart that I forget about the filterdns issue and waste several hours looking at the wrong things.

Maybe I just need to set up a cron job to kill and restart filterdns every hour? Would that work? Break something else?

[SteveITS]

I ran across https://redmine.pfsense.org/issues/14734 which sounds like a possible cause...the IP is incorrectly removed if an FQDN resolving to it changes IPs.

Also per https://forum.netgate.com/topic/199152/unexpected-alias-behaviour-two-ranges/ aliases that contain IPs and an FQDN may fail to populate all the IPs.