WAN interface pulled private IP

[fields987]

I had a power outage today so my att modem and opnsense firewall both came back on at the same time. My modem is in bridge mode. The firewall likely came back much quicker and ended up pulling a private ip from the modem when it finally came back up instead of the public ip it should have pulled. after doing a release/renew, i got the public ip back, but my quesiton is how can I prevent opnsense from pulling a private ip for that interface? I tried the reject leases from option and specified the lan gateway interface of my modem, but that prevented opnsense from even pulling an address.

Thanks!

[jonm]

Apologies for replying to an old topic but I have a similar problem and was wondering if you ever solved this?

Thanks.

[chemlud]

Hmm, I use the "Reject leases from" option and have there the (private) IP-address of the modem (from the private subnet used by the modem in case no uplink available), seems to work for me.