@johnpoz said in DNS_PROBE_FINISHED_NXDOMAIN sporadically for anywhere from 30secs to 10min. works flawlessly at all other times:
@RickyBaker unbound is a resolver.. Ie if you ask it for www.somedomain.tld it will ask the root servers, hey what is the NS (nameserver) for .tld, then ask hey NSers of .tld what is the ns for somedomain.tld, then hey ns for somedomain.tld what is the IP address of www.somedomain.tld
thank you! that's a very good explanation. so it's kind of the structural umbrella above the DNS server...and it seems like it includes DNS servers? so it's really overkill to include google/opendns ones?
@johnpoz said in DNS_PROBE_FINISHED_NXDOMAIN sporadically for anywhere from 30secs to 10min. works flawlessly at all other times:
As to register dhcp, no that restarts unbound every single time there is a dhcp event, client gets an IP, client renews an IP, etc.. Look in your log is unbound restarting - look for next time you have an issue - was unbound restarting, or restarted exactly when you had your dns problem?
ok great, this is a good troubleshooting action plan. I did remove the 4 extra DNS servers from General Setup and still had a "No internet" event this morning that lasted 2-3 minutes. I subsequently restarted my Unifi Switches, just cause...will dig into the log now
@johnpoz said in DNS_PROBE_FINISHED_NXDOMAIN sporadically for anywhere from 30secs to 10min. works flawlessly at all other times:
If you register static dhcp, then this only restarts unbound when you add a new record for static dhcp.. But with register dhcp every single dhcp event will restart unbound.
yeah this seems like an excessive amt of work, i'll disable for now and see what breaks. What type of use-case is the Register DHCP option typically used for? What benefit am I giving up by disabling it?
@johnpoz said in DNS_PROBE_FINISHED_NXDOMAIN sporadically for anywhere from 30secs to 10min. works flawlessly at all other times:
If you only have a few clients, and a decent length lease time so there are not many events then you may never notice it.
I have a TON of clients and a TON of static DHCP addresses. I use default lease time, never considered changing that but maybe I should..
@johnpoz said in DNS_PROBE_FINISHED_NXDOMAIN sporadically for anywhere from 30secs to 10min. works flawlessly at all other times:
Your browser throwing up an error about dns, could be maybe dns was having issues resolving what you asked for... You could do an above example +trace on pfsense to see if maybe your just having a problem talking to a NS to find what your looking for..
another good suggestion. I've actually never heard of dig before. I'll have to research how to use it but your example should help, what type of shell is that being executed in?