DNS for gateway routing doesn't always work

[darkcorner]

I have already reported problems for the failover that sometimes does not work.
So, the firewall has been here in my office.

Internet connectivity suddenly disappeared this morning even though I had been working for at least an hour: mail, surfing, telnet sessions, ping. Everything blocked.
Yet by connecting via WiFi the Internet router was active.
In the dashboard, the gateway was offline and in fact neither 8.8.8.8 nor the two OpenDNS servers were reachable from Diagnostic/Ping/WAN.

With a reboot, 208.67.220.220 is reachable from my PC and 208.67.222.222, 8.8.8.8, 8.8.4.4 cannot be reached from my PC or pfSense (GUI or console).

I repeat, until an hour ago I was surfing without problems, I was accessing remote servers, I was using the mail.

This is my Configuration:

• System/General/Setup/DNS:
  ** DNS1 ISP on WAN
  ** DNS2 ISP on WAN2
  ** 8.8.8.8 on WAN
  ** 8.8.4.4 on WAN2
• System/Routing/Gateways/WAN/Monitor IP: 208.67.220.220
• System/Routing/Gateways/WAN2/Monitor IP: 208.67.222.222