You need to remove any NAT objects from eth0/3 first. You do not need to remove them from the sub interfaces.
After that, you can remove the IP using "unset interface eth0/3 ip" followed by "unset interface eth0/3 zone".
You need to remove any NAT objects from eth0/3 first. You do not need to remove them from the sub interfaces.
After that, you can remove the IP using "unset interface eth0/3 ip" followed by "unset interface eth0/3 zone".