I have a UFB connection with a static IP address. I use a Fortigate firewall connected directly to the ONT - the firewall establishes the PPPoE connection so no need for a separate modem.The Fortigate also supports failover to a secondary WAN connection if the primary WAN connection fails. I have configured the Fortigate to ping the assigned gateway address (222.152.45.105) to determine if the primary connection is up.The problem I have is that several times recently the assigned gateway address has changed (ie: today it changed to 125.236.192.9), the ping to the old address fails and hence the health check causes the firewall to switch to the secondary connection. I have to reconfigure the health check with the new gateway address before the ping succeeds and the health check returns to normal.Question: Is it common for the gateway address associated with a UFB static IP to change? Its happened 3 or 4 times in the last few months.Would it be better to not ping the gateway, but instead ping something more static - such as 8.8.8.8? I assumed pinging the gateway would be less likely to cause a false positive if other non-connection specific internet faults occur. Thoughts?Thanks,Greg
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