WAN_DHCP Gateway Falsely Showing Down b/c of Firewall Rule Blocking Ping

[CraigInGA]

Problem: The automatically generated "WAN_DHCP" gateway incorrectly shows down because the ping to the gateway is getting blocked by a firewall rule.

The firewall log shows the ping being blocked by @25(1000001570)

@25(1000001570) looks like this:

@25(1000001570) block drop in log on ! re1 inet from 99.73.20.0/22 to any
  [ Evaluations: 302973    Packets: 0         Bytes: 0           States: 0     ]
  [ Inserted: pid 89572 State Creations: 0     ]

however, this rule is not found anywhere in /tmp/rules.debug so I can't figure out why it is getting generated! Rebooting does not fix it either. Any ideas?

Thanks!

[CraigInGA]

Just checked /tmp/rules.debug again today and realized the rule is in fact in there:

antispoof log for $WAN tracker 1000001570

The WAN interface is getting a DHCP assigned address and gateway from the internet provider...so why is the rule above blocking a ping attempt to the gateway address assigned by the internet provider?

Thanks!