circuit bouncing and DNS
-
So, it needs more then 80 seconds to start ....
You've been feeding unbound with pfBlocherNG food ? -
Nope I am not using PfBlocker at all, I am only doing Aliases to route filter traffic (this goes to VPN, this goes to default route and this does not get any route unless its this time). I only have issues when Comcast started having capacity issues and it bounces my connection.
Everything works fine until the comcast link bounces and it requires me to reboot.
And mind you, my IP phone starts working and my comcast roku app, I can route traffic via IP but no URL/FQDN's.
-
@ryno5514 said in circuit bouncing and DNS:
And mind you, my IP phone starts working and my comcast roku app, I can route traffic via IP but no URL/FQDN's.
Be aware : traffic is always using IP. But, if you use an URL/FQDN somewhere, and it isn't in the local DNS device cache, the upstream DNS (pfSEnse) is asked for it. If pfSense has no clue, it will look it up for you even further upstream, by resolving or forwarding the request.
If unbound (DNS on pfSense) isn't answering, the program or process on device will wait, and eventually time out.I advise you to figure out why it takes so long for unbound to start. On a Netgate SG1100, or a device like mine, an Intel processor from 2007 it takes only a second or two, three.
If the WAN isn't a aviable, this will delay of the startup of unbound.
If unbound restarts, and WAN isn't a viable, all traffic will stop.
Also, take one day of unbound logs. How many times does it start in a day ? Ones in an hour ? Ones per day ?Keep in mind :
Every new DHCP lease will restart unbound if the first check is set. Prefer Static DHCP leaqses where ever you can = the second cehck.
Also :
@ryno5514 said in circuit bouncing and DNS:
and it looks like the DNS is request hit the firewall
What firewall ? Incoming, on LAN type interfaces ? If so, these are your rules.
When DNS requested made it 'into' pfSEnse, there is no firewall any more (except for floating rules - these are rarely used.).Check your Status > Monitoring graphs.
Select Quality for the left axis, and your WAN (or WAN_DHCP, or WAN_VPNxx). Can you see drop outs = bad Internet connection ? -
I am aware that in the end all traffic is IP traffic, I statement is simply to point out there is something wrong with the Firewalls ability to do DNS.
I have an CPU Type: Intel(R) Core(TM) i5-3470 CPU @ 3.20GHz
Current: 3200 MHz, Max: 3201 MHz
4 CPUs: 1 package(s) x 4 core(s)
AES-NI CPU Crypto: Yes (active)
With 8GB of RamI dont think its a resource issue, like I said it only happens after the Comcast circuit bounces. The WAN interface will get large packet loss, go down come back up and some select trafffic will route but not any other traffic until I hard reboot.
I have made no changes to the units config the only change is comcast is not having capacity issues in the area now.
I statement of " and it looks like the DNS is request hit the firewall" is simply to state the device seems to not know how to handle DNS requests.
If check that box and the host I changes on an aliases will that impact that route?
-
@ryno5514 said in circuit bouncing and DNS:
The WAN interface will get large packet loss, go down come back u
The WAN actually goes down ?
When the dpinger test scores to many ping failure - a bad connection -, it could take down the interface .... check your the settings.
Which resets the interface,
Which restart the resolver ...
Which explains DNS isseus - added to the connection issues.
-
Yes the interface will go down, it also sometimes bounces the modem so hard it gives me a NAT IP over a bridged IP sometimes.
Are you saying I should have those unchecked? I do have them as follows
The WAN does come back up and my SIP phone, Roku comcast app, and I can ping 151.101.129.67 but not Ping cnn.com [151.101.129.67]
-
Keep in mind :
I am not 100% sure but this might have fixed it, waiting for a bounce again. Will this cause issues with IPs changing on the an aliases updates?
-
@ryno5514 said in circuit bouncing and DNS:
Keep in mind :
I am not 100% sure but this might have fixed it, waiting for a bounce again. Will this cause issues with IPs changing on the an aliases updates?
Nope still not working
-
@ryno5514 said in circuit bouncing and DNS:
Keep in mind :
I am not 100% sure but this might have fixed it, waiting for a bounce again. Will this cause issues with IPs changing on the an aliases updates?
The "DHCP registration" unchecked results in unbound being restarted less often.
In the system logs you can see for yourself if dpinger restarts the WAN connection/interface. Normally, this is a good thing, but it can also make things worse, and transforms pfSense entirely in some sort of network on/off switch.
Whats happing, I guess, is : upstream you have a lot of traffic congestion. The regular dpinger ping starts to notice this (can be seen in the logs) and it restarts the WAN, which will restart other services like unbound. -
@Gertjan Thats correct the link at the areas local hub is "well over 80%" this is my home internet and this issue is causing so many issues I am running off a cradle point most of the day. That being said my company is putting in business class circuit so we can escalate the capacity issue.
In the mean time I really hate having to reboot my firewall 10+ times a day. Is there anything you can think of that can kick start the DNS "unbound" into working again without reboot?
Really trying to avoid moving all my traffic over to my lab Velocould and FE60.
-
To be sure, check this option :
if the WAN still goes bad, your issue is most probably upstream.
-
@Gertjan said in circuit bouncing and DNS:
To be sure, check this option :
if the WAN still goes bad, your issue is most probably upstream.
Turning that off also.
-
Are you policy routing traffic from clients out of the WAN gateway? You mentioned you're using aliases to route traffic.
If the default route from the firewall in System > Routing > Gateways is set to auto still it may be choosing a bad gateway when the WAN goes down. Make sure it's set to WANGW or a valid failover group etc.
In that situation Unbound will not be able to resolve as won't have a route but clients that are hitting policy routing rules will still be able to connect by IP.
Steve
-
The edits @Gertjan had be make seems to helped a good amount. I am only having this issue when the Comcast link goes down for more than a few minutes. I updated the "Disable Gateway Monitoring Action" this morning so waiting on a bounce to happen.
Yesterday I only needed to hard reboot 2 times so this is much better.
-
You should, obviously, not need to reboot at all.
Was the default gateway already set to WAN_DHCP?
Steve
-
@stephenw10 Yes it was.
So after the edit to "Disable Gateway Monitoring Action" and the static DHCP it seems that all is much better now. I bounced 7 times yesterday and recovered each time all services.
I only worry about static DHCP is that going to mess any of my lookups up? or is that only for the LAN side?
-
@ryno5514 said in circuit bouncing and DNS:
I only worry about static DHCP is that going to mess any of my lookups up?
All the "Static DHCP" lease details are written to the system hosts file, so they are known 'for live'.
Lookups for a device will work, even if the device isn't present in the network, and the last recent lease expired.@ryno5514 said in circuit bouncing and DNS:
s that only for the LAN side?
"Static DHCP" are leases that the DHCP server hands out to devices on LAN's.
Has nothing to do with the WAN side, where a DHCP-client might be setup, so it can ask an IP/Gateway/DNS/etc from the upstream DHCP server, probably your ISP router .... which has a ... DHCP server on board. -
@Gertjan Fantastic sir. Looks a lot better, I have my second circuit being installed tomorrow and might put a Velo for a 3rd WAN link to be safe.
-
This post is deleted!
