Unbound DNS intermittent failure

Guest

I think I may have stumbled upon something in the ISP modem config that could be causing this, though the times are different than the pfSense 5 minute issues.
In the IP-passthrough page, there is a Passthrough DHCP Lease. Default value is 10 minutes. I changed to 1 day, hopefully this is the root cause and will fix things.

FYI, the modem is this one:

Manufacturer ARRIS
Model Number BGW210-700

I have many of the problems discussed here on this thread and also an ARRIS modem on a poor signal quality cable ISP connection.
Maybe we can share remedies and results

Some of the steps to remedy the situation I have taken are extreme for the time being:

Removed as many FQDNs from my firewall rules aliases tables as possible and used specific IP #'s instead
Disabled CRON automatic updates in pfblockerng (with 2 TLD Blacklist entries)
Disabled Gateway Pinger
Disabled Gateway monitoring "Action"
Disabled default blocks on RFC 1918 on WAN - my ISP uses 192.168.0 to establish DHCP
Defined about 7 or 8 public resolvers, including the ISP assigned ones for Unbound to forward Queries to

I am not happy about having to do any of this but perhaps all I need to do is disable gateway monitoring action on WAN to prevent all the subsequent issues cause by unbound restarting

How did you get into the ARRIS to increase the length of DHCP leases ?
My solution was to spoof a fixed IP config in the WAN interface - which seems to work for a while but I have backed that out as a solution

Perhaps if we studied the WAN DHCP client Advanced options in pfSense there might be something there of value to us ? I don't know much about what is listed there as of now.