DynDns Update Error!

[macafee]

Today, I found the dyndns didn't auto update after the device rebooted. I checked the log file and found that the dyndns reported error 'opnsense: /usr/local/etc/rc.dyndns.update: Dynamic DNS (home.aivian.org) There was an error trying to determine the public IP for interface - wan(pppoe0). Probably interface is not a WAN interface.'
I think the pppoe services still didn't connect the ISP server in that moment so that the wan interface couldn't get the ip address. Maybe opnsense need check the inferface's ip address before dyndns services auto update.